Right, Mr. D., but if that conversation only happens between you and housemate (or worse, never happens), then B isn't held accountable for her own behavior. We already know she can do more than she is doing, and we already know she's being manipulative about things like not taking her meds or calling excessively while her daughter is at work. She's got to be given the chance to understand that this is pissing people off, and to be part of the conversation about how to fix it. If she still doesn't...then fuck 'er.