Gotham:
Selina turned her motorcycle from the street onto the long driveway leading up to Wayne Manor. Bruce had called her over to discuss something urgent, and she worried what he could possibly want to talk about. Alfred walked out the front doors as she pulled to a stop. "Good evening, Miss Kyle. Master Bruce awaits your presence in the Drawing Room."
"Thank you, Alfred. It's nice to see you again." She gave him a small smile.
"And you as well, ma'am. May I take your coat and helmet?"
"Of course, Alfred. And how many times must I ask that you call me Selina?"
He gently shook his head with a smile as he took her gear. "At least one more time, ma'am."
Selina chuckled and said goodbye as she entered the Manor, making sure to wipe her feet on the entrance mat. It had been raining heavily for the past hour or so and didn't look like it was going to let up anytime soon. She quickly found the room she was looking for and slipped quietly inside the door. She padded over to where Bruce was brooding in front of the fireplace and slipped her arms over his shoulders.
He startled, which told Selina that she had caught him with his guard down. He turned in her arms to address her. "Selina, thank you for coming."
"Of course, dear. Now what is the problem?"
He took a step back and then wandered over to the windows, watching the rain pour outside. "…Clark stopped by earlier."
Selina was confused. She knew that Clark was Superman, glasses didn't fool her after all, but she wondered what he could possibly need to stop by for earlier that a simple phone call couldn't handle. She didn't say anything, knowing that Bruce needed a minute to gather his thoughts.
He was silent for a while before continuing, "He asked me to take in his cousin. Kara. That's her name. I agreed, of course, because she doesn't have any parents anymore, but…I just…how could Clark just abandon her so carelessly? To tell me that there wasn't enough room in his apartment, when I know that he and Lois live together and there is room for a third person. He told me that he "wasn't even sure she was fully a girl." That just has to be the reason that he won't take her in, simply because she has a dick. I honestly thought that he had given up that small-minded mentality."
Selina let him rant until he paused. "Breathe, honey. Is that all? I mean, it seems like there might be more to the story." She rubbed his back to help console him.
"I messed up, Selina. Kara was so hurt by Clark's comment that she wasn't fully a girl that I overreacted. I told her that when we made up birth records for her that she could be marked as a boy while staying a girl at home. I should've given her the choice. I should've told her that being born with a certain set of genitalia isn't a bad thing, that it happens and that it's fine. But instead, I came up with a plan that I thought would give her protection and more privacy from the tabloids and papers, but I may have hurt her without thinking about it. I only want her to be comfortable here, but I think I may have caused more damage than I fixed."
"Oh, Bruce," she sighed. "Yes, you should've explained the situation to Kara and let her decide, but you have a chance to fix that, alright? I understand what you were trying to do, but it didn't work out as well as you thought. I could speak to her, if you want. Just as long as she knows that it won't change anything. That you'll still be here for her."
Bruce slumped into one of the nearby chairs, "Could we talk to her together? I want the two of you to meet. After all, you're an important part of my life and I want you two to get along with each other."
"Of course, sweetie." She kissed the top of his head gently, but froze when the drawing room doors creaked open slowly and a small blonde girl revealed herself to be standing in the doorway.
Bruce sat up straight, "Kara? What are you doing still awake?" Kara looked hesitant to answer in the presence of Selina. "Oh. Let me introduce the two of you. I had hoped to do this tomorrow, but seeing as you are already up and about…" He got up, took Kara's hand in his, and led her over to where Selina was standing, "Kara, I'd like you to meet Selina, my partner. Selina, meet Kara, my soon to be adopted daughter." He led Kara to the chair he had previously been sitting in and asked her to sit. "Kara, I wanted to talk to you about earlier because this is important and I need you to know so you can make an informed decision, alright?" He took a deep breath, "When I suggested to have your name be Karson in public, it was wrong of me to not really give you a choice. I thought that I knew what was best for you even though we had literally just met minutes before. And for that, I'm sorry. We will make your records say whatever you want them to say. All you have to do is say the word. And if you don't want to call me dad, that's okay too. While I want you to be comfortable enough to do so, I absolutely will not force you to call me anything other than Bruce."
Kara released the breath that she didn't know she had been holding, "Thank you. After some consideration after we talked, I decided that I would like to have my records show me as male, if you don't mind. It would be easier for me if I pretended that I was a boy and became Karson Wayne, at least in public. I can always bind my chest when I get older. About calling you father…" Bruce's shoulders slumped slightly, "Um... Before I give you an answer, I have to explain my family. My biological father was Zor-El, a renowned Scientist who worked for the Science Guild on Krypton. My mother was Alura In-Ze, a Judicator for Krypton. The only person who really raised me was my Aunt Astra and she's gone. Gone like everyone else. So to answer your question: yes, I would love to call you Father, on the condition that you won't leave me like my biological family did." By the time that she had finished speaking, Kara had tears glistening down her cheeks.
Kara turned to Selina, asking quietly, "If you are Father's partner, does that make you my Mother?"
Selina looked sharply at Bruce, who nodded with a soft smile, "Only if you want me to be, sweetie. I won't leave you. Neither of us will."
After Kara had been put to bed, Bruce turned to Selina, "This isn't how I wanted to do this, but…" He got down on one knee, and pulled out a small box, "I have been wanting to do this for a while, but there never seemed a right time to ask. The highlight of my day is seeing your face the moment I wake and the moment before I fall asleep. You are the love of my life, Selina, and there will never be anyone else for me. You are the one, and I couldn't be happier. Will you do me the immense honor of marrying me?"
"Oh, Bruce," Selina covered her grin with a hand, "You must have been brooding over this for so long. Of course, darling. Of course I will marry you."
Bruce stood, taking the simple titanium band with a single inlaid sapphire on it out of the box and sliding it onto Selina's left ring finger. He twirled her around in a circle, laughing. Selina chuckled, "Darling, this is the happiest moment of my life. We will be there for Kara, and raise her right. She will grow up to be the strongest being on this planet, and we will be there to guide her through whatever life throws at the three of us."