Supergirl, Season 5

Kara:
I kind of... spontaneously agreed to... do a favor for Lena.

Alex:
Okay, so what's wrong with that?

Kara:
Nothing, it just entails... breaking into a secure army facility and stealing Lex Luthor's journals.

Alex:
What? Kara, are you out of your mind?

Kara:
I just blurted it out! I wasn't thinking. But, you should've seen how much pain she was in, and she's so traumatized by Lex's death, and the journals are the only way she can find closure.

Alex:
No, you're going to call her right now and you're going to tell her you made a mistake. You're not doing this.

Kara:
No, I can't.

Alex:
No, what you can't do is break the law and steal federal property.

Kara:
Technically, I break the law all the time. I just broke into a supermax prison two months ago.

Alex:
Okay, that is totally different. That's to serve justice, right? Okay. What you're talking about here is crossing that line for a friend.