I am sorry to hear that this young woman is in such dire straits. I hope that perhaps this will be a turning point for her, but I would not be surprised if it is not. It seems telling to me that her parents have relayed to you her attitude of "I'll get patched up in the hospital and go right back to Rich Guy to continue the Fabulous Life." It would seem that clarity of thinking is not in her wheelhouse yet.
For your sake, I hope you will proceed with caution.