You think I'm funny? (Beast boy x reader)

This is really just a fantasy I had when I was younger and thought.. why not

You are Robins long lost sister, you happen to find him in a team called the teen titans. You thought with your powers of telekinesis
You thought it's be a good to see your bother and join him
Only you didn't expect to get a little something more out of it
Not just fighting villains but also, something you never thought you would get out of from joining the team