K
They're never going to let Barb go. Whether she says it was "consensual" or not, she's an 80 year old woman who had sex with her son. The bare facts alone are enough to consign her to a dumpster fire nursing home forever. Even if she sounds lucid, the events that have transpired prove that she's incapable of caring for herself or making her own decisions.
The sad part is, with proper food, medical care, and nonsexual cognitive stimulation, it's likely that she'll rally in the nursing home and have to deal with the fallout of this for quite a while, rather than slipping away and joining Bob in the afterlife.