Natty, I'm sure you will instinctively know how to help Mark through his mom's death when it comes. As you said, just being there for him and being you.
Is her urine very dark? I noticed that with my aunt when she was 24 hours from dying. It was almost black. She was in a NH and they went in and scooted myself and her other niece out of the room while they changed the bag and cleaned her up. However, they told us the catheter was clogged. They weren't being straight with us. Of course, Hospice will be honest with you.
Hugs,
Connie