I’m sorry you are in this difficult situation. Hoping for the best. If your D hasn’t been with the boyfriend long, I wonder if he is fully aware of her issues? I wonder if you should talk to him privately? Do you know the boyfriend’s parents? They will likely be involved. (I’ve known of a few cases where spouses of people with mental health issues later blamed in-laws for not informing them about their partner’s history. Couples that stayed together did so with much support from grandparents–though many of them broke up. Often the grandparents had to raise the child/ren.) If your daughter is unable to take responsibility/parent a child, and you say you are not able to take on this challenge (due to age/health), I wonder if your daughter would consider adoption?–unless the father and his parents really want to raise the child.