Hi Shayne,
I am so sorry for this devastating news. I am caretaker to my Mom who is 88. I cannot even imagine her going through this. For your Mom to be this advanced she has been dealing with this for a long time. What an amazing woman, probably being the rock for your dad the whole time.
I, too, don't have experience with hospice so will leave that open, but just wanted to let you know you will be in our prayers. Please know we are here for you when you need to vent, scream, cry, whatever.
Blessings,
Kathy