I'm no expert on this subject, but I would think this type of behavior requires professional help. If you daughter will not willingly accept professional help, then an intervention may be what's needed. Personally I would hate to force any of my children into something like that, but when you consider the possible alternative... well, you get the idea.
God be with you, your daughter and your family.
Thank you for your thoughts. We have launched an action. One of the things we learned was that a confrontational "intervention" is a big No-no with these patients. I would have thought the exact opposite--confront, face it, etc.