My mom had in-home hospice for last few weeks of her life after her big stroke. She was no longer eating, barely drinking. They were a big help. Mom was staying at my sister's house. She is a pediatric oncology nurse, so she was up to speed in all end-of-life issues. From what you have said, your mom may not be there yet. Sounds like she still has some fight in her. Sometimes more than one hospice group works an area. Check on that and be sure to get the right one. We had to do that in Louisville.
You are doing the right things. Your wife sounds fantastic. Be sure to get her out to dinner or whatever as often as you can. Good for the both of you.
One of the hardest things was just figuring out that we needed to let mom have her way and let her go.