Boy, do I know how you feel, it took me a LONG time to realize that I can't control or dictate what my children decide to do. I can tell them how I feel and what I think, but in the end it's their decision how they choose to live their life.
You do realize that by giving them money to live on when they run out is giving them no reason to change their behavior? It took me a long time to get that through my head, but the facts are...your D will not break away from this guy until SHE decides that she will...and as long as you help them along, she'll tell herself every excuse in the world to convince herself why it's the thing to do..to stay...
If nothing changes, nothing changes....