Difficult Client

I have a client who has suffered extreme trauma. As a result, she has twice gotten drunk to the point of blacking out and not remembering things that she did, which were evidently pretty bad because her daughter no longer lives with her and says she won’t talk to her until she “gets better.” I’ve attempted to have my client work through what life would be like if she in fact never gets her daughter back. She refuses to accept that that may happen. She says she will never stop fighting for her daughter and will never be truly happy until they are together again. So I feel stuck. I can’t change her mind, but I want so badly to help her live in peace despite all of the things she has been through and is suffering. Is there a method of coaching clients who refuse to see their position from different perspectives? I’m honestly not sure IF she can be helped at this point. Thoughts? Thank you!!