Elsa made a quick stop at the library to retrieve a specific book that would provide her with the vital information she needed- the location of the trolls. She tried remembering how to get there by her memory alone, but she couldn't no matter how hard she racked her brain. It was unsurprising considering she had seen the trolls only once in her life and that was when their parents had rushed to seek aid from them after she had accidentally struck her precious sister in the head with her powers following a late night play date gone wrong.

It had happened so long ago and she had been too young, upset, and very frightened at the time to really take in her surroundings, not to mention it had been dark. The book was her only viable option if she didn't count asking Anna for the directions… and that most definitely wasn't going to happen.

Once she had the book in her possession, she hurried straight to her room without further delay, scurrying through the halls with her heart in her throat, expecting Anna to leap out at her any second, which mercifully didn't happen. The Queen probably would have died from a heart attack if it had. She managed to make it to her room within ten minutes of the thirty minute time limit Anna had given her, and as soon as she was safely inside she closed the door and locked it, freezing it shut for good measure. Anna could try and come, and she undoubtedly would, but unless she had the ability to go through walls or doors, she wasn't getting in. Not unless she burned the door down. Elsa didn't think Anna would go that far, but then again Anna was unpredictable…more so than she thought considering the predicament they were in.

I can't believe I touched my sister intimately, Elsa thought in a daze, grazing the fingers on one hand haltingly through her bangs as she cradled the thick and musty smelling brown-leathered book to her chest with the other, laughing at the craziness of the situation. She had inadvertently fucked her own sister, to put it bluntly. Fantasies were one thing but to have actually done the dirty deed?

It was rather shocking to Elsa that the younger girl seemed to accept what happened between them so eagerly and unquestioningly, and really, Elsa should have been elated by the revelation considering it was what she'd been dreaming of for so long… But any joy she might have felt was overshadowed by the wrongness of it all. Anna was her little sister, for goodness sake! It was dangerous and unacceptable for them to be romantically involved. No matter how badly Elsa wanted it, she needed to ensure that nothing would happen between them ever again.

It pained Elsa greatly to have to lock Anna out, but what choice did she have? She could not allow Anna to entertain thoughts of them together, and she knew any effort used to try and talk her sister out of pursuing the matter would be pointless. Anna wouldn't give up so easily on something she felt so passionately about, and judging by her kisses and the slap she'd given so freely, she was VERY passionate about it, extremely so. Considering how incredibly stubborn and persuasive Anna was at times, she would likely continue to push and encourage Elsa relentlessly to accept it, and the worst part was that eventually Elsa would cave, because she was utterly defenseless and weak when it came to Anna. If another kingdom wanted to take Arendelle from her control, all they would need to do was send an army of Annas her way… Her defeat would be instantaneous.

Elsa tossed the book onto her bed and sighed weightily, knowing the situation she faced was far worse than what she could have imagined when she'd thought Anna had been a random acquaintance. She had feared the news of her intimacy with "the girl" getting out to the public would cause a huge scandal, but that was nothing compared to the real, shocking truth. If the people of Arendelle ever found out that she, the queen, tainted her poor innocent sister there would be outrage. The pitchforks would come out and her head would fall, she was certain of that.

It was official, Elsa decided. She truly was cursed.

Stripping out of her clothes, Elsa ran the tub and bathed quickly, wanting to hurry and get to the book and find the information she needed as soon as possible. She scrubbed her skin extra hard, as if by doing so she could cleanse herself of the wrongness she had done.

After her bath she slipped into her nightgown and stood in front of the bathroom mirror, examining the fading redness of her cheek, rubbing it and remembering the sharp pain she had felt when receiving it. Anna striking her had been a shock to her system and she had been wounded by it in more than a physical way, but regardless of how she felt about it, she knew she deserved it. In fact, she deserved far worse than a measly slap for what she did.

Elsa filled an empty glass that was perched on the sink counter with water, wishing she had something strong that could knock her out cold. Back when she was a child and was plagued with horrendous nightmares following Anna's accident and suffered one too many restless nights, she had been given a sleeping remedy that allowed her to sleep undisturbed. She needed that now more than ever! Sulking, she took the cup into her bedroom and set it on the bedside table next to the portrait of Anna she kept there, which seemed to stare accusingly at her as if saying, "How could you?"

"I'm sorry," she said to it, and turned it to face away from her, too ashamed to even look a picture in the eye. Elsa stretched out on her bed and opened the book that would save her from the mess she'd put herself in, or at least she hoped. She thumbed through the worn pages and discovered it was chock full of text she didn't recognize, written in a language she was not familiar with. She cursed under her breath and impatiently slipped her fingers through her front bangs. How was she supposed to find the help she needed if she couldn't decipher the words? It was the same book her father had turned to that fateful night many years ago, she was sure of it. But she was missing something, forgetting about something important. She rubbed her temples in frustration and willed herself to remember.

And then it came to her.

A map! There had been an actual map inside the book. She recalled seeing the map fall onto the floor while she huddled beside her father's legs after he frantically opened the book on that scary night.

As if on cue, as Elsa turned a page in the book, a folded sheet of paper escaped from its previously confining placement and fluttered to the floor soundlessly. She flicked her eyes to her right to track the falling paper's movement and met a steely pair of eyes similar in color to her own, staring her down intensely.

Elsa freaked out, arms flailing up, sending the book tumbling through the air and across the room where it hit the wall with a bang before thumping uselessly to the floor. She threw herself back against the headboard of her bed, hand to her heart. "Anna! How did-? Where-?!" She looked confusedly to the door, which appeared untouched and frozen solid just like she left it.

Anna arched an eyebrow and rested her arms on the bed, dropping her head on top of them, grinning coyly. "You didn't know about the secret trap door under your bed that hides a connecting passageway from your room to mine?"

"What?" Elsa looked utterly horrified.

"It was a joke," Anna said sheepishly.

"This whole thing is funny to you, is it? It amuses you greatly?" Elsa said petulantly, scowling.

"Actually, you have to admit it kind of is funny. I mean, just a little bit… at least certain aspects of it, maybe…" Anna grimaced as she perched on the bed cautiously, sensing Elsa was still uneasy, and played with her own fingers, tapping the tips together. She had sensed Elsa was going to try and avoid it, to avoid her, so after she left the garden she zipped to her own room to change out of the masquerade dress and into her nightgown and then double-timed it to Elsa's room, ducking inside and crawling under the bed to hide and wait for her. After seeing Elsa ice the door, she was very glad she made that decision. "You make a bad habit of avoiding serious issues, Elsa," she said disapprovingly.

Elsa, ignoring her statement, crossed her arms and said abruptly, "Was this your plan all along?"

"What? To hide under your bed?"

"I'm talking about when you came to me with the masquerade idea, the one you insisted on me throwing," Elsa said impatiently, tucking her legs against her chest, wrapping her arms around them. She looked like a frightened little girl, not the regal Queen she was meant to be. "You were quite adamant about the whole disguise thing."

Dumbfounded, Anna said, "Wait, what?" She scoffed and choked on a laugh. "Elsa, I don't know if you're aware, but I'm terrible at planning things. And for me to have planned for any of this to happen, especially that far back? Why, that would imply that I knew… what you would do. And trust me, I had no idea you were so… adventurous. So no, I didn't plan it. I was genuinely interested in attending a masquerade party," she said defensively. "Our meeting and everything that came after? It was plain dumb luck, or fate. However you want to look at it." She smiled. "Trust me, I was surprised as much as you when I found out the truth. The only difference is I didn't have as much snow effects going on…"

"When… when did you know?" Elsa asked, unable to hide her curiosity.

"The next morning, during breakfast." Anna rubbed the back of her neck and snickered. "I actually fainted the moment I realized. You remember that, right?"

Elsa remembered. She also clearly remembered the kiss immediately after. "You figured it out that soon?"

Anna straightened up proudly and said smugly, "Yes, I did." She shrugged, her smile faltering, and brushed an annoying strand of hair that flopped in front of her face behind her ear. "Of course, I kinda freaked a little. I mean, who wouldn't after finding something like that out? I didn't know what to do. I tried bringing the subject up to you a few times but… well, it was a rather difficult subject to bring up, obviously, and honestly, you were totally oblivious to the signs."

Oblivious? Elsa thought back to a few of their most recent encounters that seemed especially intense, particularly the massage session in her study. So Anna had been fully aware of what her actions were doing to her that whole time? She groaned with embarrassment, covering her face with her hands and sinking lower in the bed.

"Then," Anna went on, "I got the idea to write the letter, and I swear it sounded great in my head, but… it didn't go as smoothly as I hoped it would..."

Peeking out from between her fingers before dropping her hands in her lap and shaking her head, Elsa asked, "Seriously, Anna, what were you expecting? Wait, no. Don't answer that." She waved her hand dismissively and sighed, stretching out her legs. Worrying a hangnail that appeared on her thumb after nervously picking at her fingers, she began apologetically, "Anna, I'm so-"

"Don't you DARE apologize to me. I won't accept it," Anna huffed in irritation, shaking a threatening finger in Elsa's direction and scooting closer. "I love you, Elsa, and you love me, right? That is all that matters now."

"What I feel for you isn't love, Anna, don't you see? I mean, I do love you, obviously, but that other thing… it's lust. These feelings… Anna, if you had any idea what's been in my head… The vulgar things I've imagined doing to you, with you…" Elsa stopped herself from continuing, her eyes darkening with a hint of unhidden desire.

It was a look Anna had grown quite familiar with and one that sent pleasant tingles down her spine every time she saw it. "Tell me," Anna pressed quietly, waiting expectantly for her to go on.

Elsa blinked in alarm and cast her eyes down. "Never mind. Forget I said anything."

As if I could forget that confession, Anna thought, one side of her lip twitching. "Elsa." Anna placed her hand on Elsa's shin and moved it higher so her hand was resting on her knee.

Elsa stiffened at once, becoming painfully aware of her surroundings for the first time. She was in her room all alone with Anna, the two of them dressed in nothing but their nightgowns and sitting on her bed. Anna's hand wandered past her knee and made itself comfortable on her thigh, rubbing it distractingly. The air was growing thinner, the room stifling. Elsa swallowed thickly, her eyes resting on the glass of water sitting on the table just an arm stretch away, but she was too afraid to move a muscle to reach for it.

"I know you desire me. It's a perfectly natural reaction for people who are in love with each other," Anna assured soothingly. "It doesn't matter that we're siblings. Let's forget that minor detail for a second, okay? The attraction you feel, wanting to touch me, it's normal." Her hand switched from rubbing her upper leg up and down to her fingernails lightly scratching, making circular motions. It caused Elsa's leg to spasm pleasurably and Elsa gritted her teeth to fight down the sensations while Anna continued speaking. "Answer me honestly, do you desire only my body? Is that all you really want from me?"

She was going to say yes, but as Elsa looked at her sister she knew she'd be lying. She wanted Anna's body, oh yes, and constantly thought about pleasuring it more than she liked to admit, but she didn't want only that. Elsa desired so much more than that. She wanted Anna's smiles, her laughs, for those blue-green eyes to look adoringly upon her always and forever. She wanted everything Anna had to offer, she wanted to be shrouded in everything that was Anna.

"I want all of you," Elsa whispered, pain in her eyes.

Anna's fingers squeezed Elsa's thigh. "For how long?"

"Long enough." Elsa admitted hesitantly, "It… it got worse after… after the night of the ball. I imagined I was pleasing you when I thought I was with another." She said it almost inaudibly, but Anna heard her loud and clear thanks to the stillness that permeated the room.

"Oh." Anna flushed at the admission and squirmed in place, surprised and extremely aroused by Elsa's confession. "Wow."

They were both quiet for a brief moment, their gazes averted shyly. Anna continued her movements on Elsa's leg, fingernails lazily scratching her thigh through her thin nightgown. Elsa watched the hypnotizing motion, wishing those nails were actually dragging against her skin and not blocked by the fabric of her gown. But what she wanted didn't matter, she reminded herself. She had to do what was right. Elsa finally stopped her by placing her hand on top of Anna's, sensing they were heading toward dangerous territory and knowing she needed to put a stop to it before anything could happen.

Tiredly, Elsa said, "Look, Anna. It doesn't matter. We can't-"

Infuriated by her sister's unwillingness to see the good in their mutual attraction for each other, Anna snarled aggressively, "Don't make me slap you again."

The outburst startled Elsa but she recovered quickly and cocked an eyebrow, smirking wryly at the threat in amusement, as if daring Anna to do so.

Unintentionally, the expression revealed itself to Anna in a very erotic way, catching her breath and igniting a fire in her belly that spiraled wildly out of control. All and any self control Anna had was lost and she lunged across the bed, diving at her sister hungrily. Her body collided with Elsa's, creating a collective gasp from both of them before Anna crushed their lips together fiercely. Anna's knee appropriated itself between her sister's legs and Elsa's hips jerked reflexively against it, eliciting a strained, breathy moan from her lips while still firmly mated with Anna's. The sound was heaven to Anna's ears and she wanted to hear more of it, craving for that breathless voice to whisper her name with unbridled passion. She shifted her leg slightly and smiled against her sister's lips when Elsa's body jolted at the contact a second time.

Elsa tore her mouth away from the intense kiss with a twist of her head, her fingers digging into her sister's shoulders, and gasped urgently, "Anna!"

Anna lifted her head up dizzily and the two gaped at each other in shock. Her whole body weight flush against her sister's figure, Anna stammered, "Wow, Elsa, I- I don't know what came over me… I didn't mean… I mean, I did but… instincts and all." She shrugged helplessly.

Elsa's entire face was scarlet, her breathing wild and heavy. Her body rigid, she flattened herself into the bed in an attempt to escape the searing heat of Anna's body. But escape was futile when her little sister was glued to her body so tightly, so perfectly and oh so deliciously…

Stop this now before it escalates any further. Elsa's one rational thought forced its way through the foggy haze of desire that was rapidly consuming her. Luckily she still had control of her arms, so she pressed her hands against Anna's shoulders to keep her at bay and managed to say with much difficulty, "It's… okay. Just… get off of me."

Anna's eyes smoldered and she grinned naughtily as she swatted Elsa's hands from her shoulders effortlessly and pushed them to lay on either side of Elsa's head which rested on a soft pillow. Slowly her lips crept toward Elsa's again. "Oh, yes, I'll get off on you," she growled huskily before claiming Elsa's lips once more, the second time equally as heated as the first.

Elsa whimpered her name, her body reduced to a jittery mess of nerves, and Anna wasn't sure if she was calling her name out of fear or if she was urging her on. It didn't matter either way, Anna wasn't turning back now. She drove her knee delicately into Elsa's hot center again, the heat of her sister's most private part scorching and damp even through the fabric covering it.

"Oh, my," Anna said, chuckling. "Someone is very excited." She brushed her lips against Elsa's teasingly. "I wonder if there might be something I can do to rectify that problem?"

"Please," Elsa said wantonly, as her hands came down and planted themselves on Anna's hips. They retreated momentarily before returning to the same position again, then repeated the process as Elsa warred silently with herself. Her hands crept lower and pinched the fabric of Anna's nightgown and started to drag it up so her hands could slip under and meet delicate warm skin. The instant her fingers skimmed the smooth and naked flesh of her sister, she tensed and jerked her hands back as imaginary alarms went off in her head, reminding her what she was doing was wrong. She grew cold, the temperature in the room instantly dropping.

Anna noticed the change and sat up, straddling Elsa and capturing her hands in her own, squeezing them comfortingly. "Don't be afraid to touch me, Elsa. It's alright. Don't let fear overtake you. Don't fear this," she implored as Elsa turned her head and tried to bury her face into the pillow to hide. Anna forced her to look at her by forcefully gripping her face with one hand but Elsa closed her eyes to avoid meeting her eyes. "Elsa, if you continue to hide your feelings on this matter your powers will run amok. Don't think I haven't noticed the coldness whenever we're together! Accept it," she urged. "Embrace it." Nuzzling Elsa's cheek fondly, she leaned in and whispered into her ear, "Let it go."

Her sister's words sank in and Elsa's eyes snapped open in time to see Anna duck down for another kiss, which she barely managed to dodge. Much to Anna's surprise, she ended up making out with a pillow instead of the expected lips of her sister. Before Anna could complain, Elsa grabbed her shoulders with a sudden surge of energy and flipped them so their positions were switched and she was now straddling her little sister.

Elsa was done fighting with herself and she was done fighting with her sister.

She couldn't hold it back anymore.

AN: Huh. What could possibly happen next, I wonder? Probably nothing interesting...