Thank you all very much for your wonderful responses.
She is a bright and kind young woman, but does seem to have low self esteem. There are times these situations worsen...and during these times there seems to be an impulsive component to them. That is when I suspect her illness might be playing a role. Treading were angels fear to go....yep...that kinda describes it.
She has seen a therapist in the past and it was somewhat helpful. I plan on gently suggesting she seek additional treatment.
Thank you again.