I don't think you can set those boundaries with her.
The kind of boundaries you can set are those that affect you personally: if she talks rude to you, if she's abusive to you physically, verbally, etc., if she takes things from you without asking, etc.
Her going out and enjoying the single life isn't something you are going to be successful at telling her to stop.
It's a fact, we rebel against those that control us and the more you attempt to control her, the more she will rebel.
