Well, it feels to me like you've got back-stories all worked-out, and it feels to me like you know where the story is going, so those are both good things.
However, you need to show us the back-story. Tell us as little as possible. This scene you've got written is very exposition-heavy. As such, it doesn't feel like a conversation that a couple of kids would have. It feels very soap-opera-y. Way too much melodrama.
Also, you might wanna re-think the title of this project. I know you young'ens won't make the connection, but us old-folk think of something entirely different when we hear "Family Ties".
https://www.youtube.com/watch?v=iliLnQmaEOA