Slayer Spirit (fem!Harry, DH, Post S7, AU)

A/N: Just a plot bunny that wouldn't leave me be.

Lily stared at the old parchment, obtained with a vengeance from several watchers and council men who had long ago tried to take custody of her because of a perceived possibility of her being a potential slayer. Several mind charms and compulsions had delivered for her the information to possibly save her son from a madman.

A fragment of demon essence infused into the slayer line offered possibilities even if herself was in possession of only a sliver of the demon's potential compared to the actual slayer it would be enough to power a protection second to none in exchange for her life, in her opinion a worthy price to pay to save her son's life.

Nodding to herself she stroked Harry's raven hair as she began to pull together a ritual from texts long since lost to the Wizarding world.

Harry held her as she cried into his shoulder, gently rubbing her back as she choked and spluttered and tried to understand why their red-headed friend would betray them. Pulling back slightly Harry cupped her cheek gently rubbing a thumb in a circle as he offered a gentle smile.

"It's going to be okay 'Moine," Kissing her just above her fringe, "It's going to get better, it has to get better… okay?"

Hermione gave a weak smile as tears continues to fall from her reddened eyes.

Harry gently steered her to the small bed she had claimed on their first night, peeling the blankets and tucking her weak form back under layers of cotton warmth, he stoked her hair while silently cursing Ron for the pain he was putting his best friend through.

Sparing a glance at the silver locket hanging on the wall Harry frowned, the locket had made him moodier but he was positive that he wasn't being affected to the degree the red-head had been to leave them. Shaking his head of the troubling thoughts he glanced at Hermione's sleeping form, maybe he should take her to a nice place to help ease the stress on her.

They would have to move soon, he knew their wards and isolation were good but Ron had a temper and he wouldn't put it passed the bastard to get captured and spill their location. Keeping an eye on Hermione's fitful form he opened the book she had read on rituals.

A red-head stood on top of a crater as fifty girls armed with sword and stake charged into the chasm towards a horde of twisted snarling figures. A corona of power began to form around the witch as she held aloft a weapon, as the power began to build her fiery red hair was washed away into a snow-white, as her chant reached a crescendo a pulse of magic visibly displaced the air around her.

In the chasm the girls suddenly began running harder and with more skill, their feet hitting the ground like machine pistons, blows from a sword were shearing through limbs of the creatures with easy swings.

His heartbeat began to beat like a drum filling his ears until he couldn't hear the battle over the roar of his heart. Suddenly there was silence and a black-skinned women stared into his eyes, "Do you want to be strong?"

The words filled the silence with a catastrophic roar and his world was filled with pain, his ears rang and his body burnt. The dream kept him conscious as he endured the fire that went on forever and was over in a flash.

"HARRY!?" Through his pain the awakened wizard could hear a desperate cry from Hermione, the fear in her voice spurred him into wakefulness. Opening his eyes and sitting up was oddly like when he had burnt the possessed Quirrel and woken in the hospital wing.

Seeing his awareness she grabbed him in a crushing hug, sobbing and talking incoherently into his shoulder, piecing together a series of events from her scared ramblings Harry was beginning to suspect the dream had been more akin to a Voldemort vision to trigger such a violent outburst from the bushy haired witch.

"I'm up Hermione,"

"Are you okay?!" She stared at him with a worrying ferocity as if daring him to tell her a falsehood,

"Yeah, Just a weird dream, I'm all achy though, like I went through the wringer," As his voice registered he paused as he processed the higher pitched words, "But I'm guessing from the way my voice is different something happened… something bad?"

Hermione broke eye contact casting her eyes downwards, she chewed nervously on her bottom lip, "Uh… well I woke up and you were thrashing in your sleep… I thought you were caught in another dream by Voldemort"

Her voice began to pitch in worry, "When I went to wake you up, your body began to glow and burn with a white fire, it didn't affect your clothes or bedding but it was affecting you, none of the diagnostic spells had any result…" Her eyes took a slight haunted look, "Then there was a scream, a scream that made my bones ache like I have never felt before as a black shadow rippled forth from your scar,"

She glanced again at his chest to Harry's confusion, "Then your body shifted like Tonks and well…"

She broke off gesturing to his chest, glancing down Harry blinked, there were two bumps where there shouldn't be… two bumps that looked awfully familiar. Warily with a finger that he noticed was much slimmer than it used to be he poked and jumped at the tactile sensation from poking a breast.

Face paling rapidly he looked fearfully at Hermione, "We can reverse this right?" He flinched at the high pitch voice that spoke instead of his proper voice. Leaning forward he noticed even his hair had changed, the transformation had lengthened and shifted the previously black hair into a dark auburn.

"I don't know Harry, spontaneous gender change is not something I have ever heard of…" Mentally Hermione began to catalogue the books she brought with them, "And I don't know anyone we could go to… St Mungo's or Hogwarts are the only place I can think of where we could find a skilled healer."

Hermione's brow crinkled "In the dream was there any hints or communication?"

"Well not really, it got weird towards the end but mostly it seemed straight forward, a bunch of girls got a spell cast on them to make them stronger and faster…" He glanced at Hermione's raised eyebrow, "It was a spell cast without a wand as a focus but with a weird scythe, while they were fighting a couple hundred deformed beasties. After the spell seemed to take, they started chopping through the other guys like a hot knife through butter, and then out of nowhere a black women appeared in front of me and said "Do you want to be strong?" After that all I can remember is pain and you woke me up"

"Weird," Her eyebrows crinkled in thought "Was the point of view from anyone?"

"Not that I could tell, normally I don't get any freedom and have to see what he is looking at but last night I could look around freely,"

Glancing around the room while Hermione was jotting down notes and flipping through assorted pages, Harry's gaze was drawn to the Horcrux, as soon as his eyes rested on it a violent urge to destroy the locket bubbled in his chest. Tearing his gaze away from the locket he took several calming breathes and saw Hermione's concerned look.

"When I looked at the locket I felt an urge, it was quick and violent to smash the locket," He explained sheepishly, "Even now I can feel a sort of wrongness coming off it I couldn't feel before…"

Brown eyes narrowed at the declaration, "So you can sense the wrongness of a Horcrux…" she glanced at the notes and muttered softly or what should have been too soft for Harry to hear from a distance, "Maybe strength was changed and increased…"

"Strength?"

Hermione quirked an eyebrow, "And increased hearing as well and sight,"

Glancing to his bedside table Harry noticed for the first time he didn't need his glasses to see, noting his surprise she made another small note of the improved eyesight.

Waving her wand rapidly over Harry's body, muttering chants she frowned at the results, "The diagnostic spells show you as female plus a sort of result you would get from a werewolf," She elaborated, "But the spell can't determine what the extra is,"