I would go see her. My wife was a nurse for many many years and she doesn't believe for a second that people in comas aren't aware of our presence and that they can't hear us. When my mother was in her final moments, she wasn't fully conscious, as she was starting her transition to the other side, but she was thrashing about and wouldn't settle down. I held her hand and told her that I would be alright (which was mom speak for sober). She immediately settled down, took her final breath, and passed. Go see your mom, it could be healing for both of you.