catherine, I totally agree with the "self-worth" aspect in this situation. And love what your mom said!!!
Paige - is your dd afraid to be without this guy or is she afraid to be "alone"? If/when she can answer that question honestly, she should be able to figure out what to do. I also agree - be supportive. It is her life to live and her decisions to make.
It's hard being a parent!!! Hugs to you as well!