There is a similar situation with the singerbabe in my main band. Yes, she looks and sounds fantastic, and has her own karaoke business. She gigs 5 nights a week doing that, leaving only Friday night open for gigs. She has to get a sub, if we play a gig on a Saturday. After 6 months of doing almost weekly acoustic gigs on Fridays, and a few full band gigs, she still needs a music stand, and still seeks approval for every small thing that she does right, like a kid in elementary school (and an early grade, at that). She also has a drinking problem. She is so beautiful and talented that she is able to manipulate others into her worldview that she has no problem, needs alcohol to lube her vocal cords, and is quick to deflect blame; all of the classic signs of the addict.
We love her, as a human being, but are faced with an awful business decision. For now, we have clandestinely lined up folks to cover the various upcoming gigs, in hopes that we can turn her around, but I do not hold out much hope. I won't get into any more minutiae, here, as privacy does need to be respected, but I am afraid of what her 'hitting bottom" might have to entail.