Is it worth it? Keeping her, I mean?
It's no business of mine what you value. But that's my take.
It's always nice if someone is willing to help. We aren't in her shoes and we don't know how desperate the situation is or why is she in need.
To give or not to give is up to the giver. It just gets fuzzy when emotions are put into account. Conscience, sense of responsibility, things like that.
In the end, you're the only one who can decide what consequences you're willing to shoulder. If you can choose one that will give you least regret, the why not pick that choice?