Okay this is just the one moment that didn't actually happen in the episode, but was implied. I really wanted to make a short extra moment that showed how getting ready to go to a party might have been a big deal for Selina. I can only assume she's been surviving on the streets for a long time. So I can't imagine how long it must have been for Selina just to enjoy being a girl and do things like wear a dress and go to a party with a boy.
Also I'd just like to say at this point, that I like Barbara Keane. I'd like to think that she was kind to Selina in a moment like this.