Alex's apartment, 11am

Kara was sat with Nia in her lap, breast-feeding her whilst Alex, Eliza and Lena were preparing the dinner. Lena was very reluctant to hand Nia over to Kara at all, but over that morning, that task just became a little easier. Kara looked over to the kitchen counter from where she was sat, smiling as she watched everyone busying themselves with dinner preparations. Eliza was peeling carrots and various other vegetables whilst Alex was already drinking. Mulled wine wasn't Alex's style, but whiskey did the job. Eliza frowned at her daughter as she poured her third glass of the liquid, "Alex dear, we are only on eleven, calm yourself."

Alex pouted, "Mom, it's Christmas, that should give me the luxury of being able to drink however much I want." She complained whilst Lena giggled. Alex narrowed her brows, "Why don't you drink?"

"Me?" Lena asked, surprise evident in her voice. She then smiled, "I can't drink when I have the little one over there to look after and Kara can't be the one taking all of the responsibility, we are parents now Danvers, we have to put her first above everything else. Speaking of." Lena began before turning ninety-degrees on her heel. She frowned at Kara, "You're very quiet Kara."

Kara giggled nervously as all eyes were now on her, "I'm just taking in the beauty of our creation and she is also very hungry, this is like the third time today."

"That sounds like someone we know." Eliza smiled, looking down at the carrot she currently had in her hand, she then looked at Kara. Eliza was incredibly proud of Kara, she was incredibly proud of all of her family. She could never want anything more or less, "Anyone would think this food is for a family of ten."

"Well." Kara began, "We do have J'onn, Winn, Sam and Vasquez coming over plus my appetite."

Everyone hummed in agreement and Kara frowned, "Wait, were you just all agreeing about my appetite?"

"What appetite?" Lena asked as she held her mug of hot chocolate to her lips. "It's astonishing, I'll give you that."

Alex almost choked on her whiskey. Kara's eyes widened incredibly, and she blushed heavily. It was then Lena who realized what she said. She sat up quickly as Eliza looked at her incredulously, "Oh…Oh, I never meant that. No, that was Alex."

"Yes, Alex. I will invite you to keep your mind clean around the child." Eliza said sternly, "That applies to all of you." She pointed at the three of them. Kara's jaw remained opened wide, "I…I never said anything. That was Alex." She then pouted.

The room fell into an awkward silence before Alex spoke, "Kara, we could use your super speed over here, we still have a lot of stuff to do."

Lena walked over to Kara and sat beside her, "I'll put this one in her crib, you can go and help out." She said as she slowly took Nia from Kara. Kara looked into Lena's eyes for a moment, she was looking for any distrust or something to tell her that Lena didn't trust her. She found nothing. The Kryptonian smiled warmly and gave Lena a kiss on the cheek before going to the kitchen. She washed her hands quickly and within two minutes everything was in the oven and beginning to get cooked.

Eliza was going to scold her for using her powers, but she then decided that at this point the super speed was needed because they were not ploughing through the preparation quick enough. It was then that Kara went back over to where Lena was sat. She waited patiently for Lena to come back.

Alex sat beside her in Lena's spot, "Your text sounded very panicky this morning, what was up?" She asked softly. Kara merely shrugged, "She must have had a weird dream that felt real and so…Time is a weird concept with those dreams. She is fine now though."

Alex sighed softly, "There is something else. It's Christmas day, your favourite day of the year and you are not bouncing off of the walls. I know when there is something wrong with you...And yes, while some dreams feel real, there is something else you're hiding from me. I know you Kara Danvers. I want you to open up to me."

"Not today Alex." Kara sighed heavily, "I want at least one normal day before I tell you anything because believe me, when I tell you that you won't look at me the same again after I tell you this, you won't."

Alex then felt dread pool her stomach. She took a deep breath, "It's about Nia isn't it?"

"Alex, just drop it, please." Kara sighed heavily. She looked up as Lena walked back in and plastered a smile on her face, "Hey!"

Lena frowned, "Are you okay?" She knew when something was wrong with Kara but considering these last few days had been very manic, it could be a number of things. So, she brushed off whatever it could be and sat next to Kara where Alex was sitting once before.

"Everything is fine." Kara smiled as she opened her arms for Lena to sit next to her. Lena got comfortable in Kara's arms, and they watched TV together. Alex was sat across the room, staring intently at Kara the entire time. Even after Lena had fallen asleep, she still kept an eye on Kara whilst Eliza kept looking in between the two every now and then.

After two hours, Eliza got up from where she was sitting as Nia began to cry, "Stay there Kara, I'll sort her."

As Eliza left the room, both Kara and Alex held each other's gazes for a moment. Kara could see that Alex was incredibly pissed, maybe Alex had already figured what the secret was or she was just pissed because it was something huge that she was keeping from Lena.

Alex chewed on her tongue slowly as Kara looked away from her. The TV played in the background, neither of them were actually paying attention to it. Lena shifted in Kara's arms and got comfortable again, not waking at all.

After half-an hour, Kara gently got up as to not disturb Lena. She had enough of Alex's staring, she needed to get out of the room. Unfortunately for her, Alex followed, picking up her house keys so she wouldn't lock herself out. She followed Kara down the hall, "You're running from something." Alex said coldly, "I know today isn't the day, but I can't help but think that you have done something really bad, not to Lena, but to your child."

Kara leaned against the wall, she had no idea how to look at Alex, her heart feeling like it was going to explode and not for a good reason, "Why can't you just drop it?" Kara hissed, finally locking eyes with Alex, fighting back tears, "Why can't you just wait until after today?"

"Because I care about them Kara!" Alex hissed, "Nia and Lena, I care about them as much as I care about you, but I can't shake the feeling that you, my sister, has or will do something that I can't forgive her for. So, tell me Kara. Tell me what the hell you wanted to say to me tomorrow. Is it to do with Nia?"

Kara shook her head, "I can't do this."

Alex crossed her arms, full of attitude, "So it is Nia." She said with a cold tone. As Kara refused to answer, Alex walked over to Kara and made sure that she was in Kara's line of sight, "Tell me what you've done."

Kara swallowed hard before opening her jaw to talk, but no words came out, "I…Alex, can't we just wait until tomorrow?"

"No, no we can't." Alex said to her, "Tell me now."

Kara looked up at the ceiling praying that someone or something would help her, but right now, it was just her and Alex.

"That…That day we found Nia, in the tank…" Kara began. She ran a hand down her face, trying to stop the tears that were coming, "At first, I thought there was no way that we could save her because all of the glass was made of Kryptonite. I…I saw a huge girder that I could have used to smash the tank open and save her."

Alex took a step back away from Kara. She couldn't believe what she was hearing.

"Instead…I…" Kara sighed, "I chose not to use it. I could have saved her, but I chose not to." Tears now streamed down her cheeks more than before as she watched Alex's inner turmoil.

Alex was trying to comprehend what Kara was telling her, "You're telling me that…You…You had the chance to save her. You knew you could and you didn't?!" Just as Kara nodded, Alex pinned her against the wall with all the human strength that she could, "You went against everything you stand for! Lilian didn't murder her, you did. She was there begging to be saved and you did nothing." Alex hissed, "She was terrified Kara and you had every chance to save her and you didn't!"

Kara struggled to find words, she knew as soon as this truth came out, everything would change between her, Alex, Eliza and everyone she knew.

"Alex, no one can find out." Kara gasped.

"Why can't they? What are you so afraid of? The future will already happen Kara. You watching her die made that happen." Alex said to her, "Now get off of my property and don't come back."

"Alex-" Kara gasped.

"Get lost Kara!" Alex snapped before she headed back inside. Kara followed her, hot on her heels, "Alex don't-"

Lena sleepily rubbed her eyes as she realized what was going on and Eliza was busy feeding Nia once again, but with human baby milk instead. Both women had no idea what was going on, but they were soon about to find out.

"Kara killed Nia." Alex said outloud. That was hard for Lena to swallow. She got to her feet and frowned in confusion, "Why…why would she do that Alex?"

Alex took her phone out of her pocket and played a recording of what the two argued about outside. Throughout the recording, Kara couldn't look at anyone. Even Eliza's normal delightfulness towards Kara seemed to be gone.

Lena sat back down once she had heard the recording, "You had a way to save her and you chose not to?"

"Lena-" Kara began, before the Luthor raised her voice.

"You had a way to save her." Lena ground out, before standing once again. "You just chose to watch her die and all the while she was begging for her life!" Lena hissed, "I thought mother could be cruel…I would never expect that from you. Not ever." There was a moment of silence before Lena made up her mind, "I can't do this Kara, not now. Now that I know that you are a cold-blooded killer…I can't." She sighed, "I want you out of my life and you are never going to see her again!" Lena hissed at Kara, her eyes ablaze, "I think you should leave."

Eliza glanced at Kara, "Kara…I can't offer you help…I didn't think you were capable of that…Turns out, I'm wrong too." She sighed, "I'm sorry, but Lena is right, you are a killer. There isn't another way to put it. You let the girl drown when you had a chance to do what was right and yet, you chose not to." Eliza swallowed the lump in her throat, "You should go."

Kara looked down at the floor. She glanced at Alex, and knew she wasn't going to get any help. Instead, she decided to just leave. Before she did that though, she looked at Nia in Eliza's arms, "Can I…Can I kiss her one more time before I go?"

With that, no one replied, they just stepped out of Kara's way. Kara had one small moment with Nia, giving her a kiss on her head. She held back tears as she turned to walk away. She didn't even look back at anyone. Not even her own daughter.