Mom's health declining what are the must do's before EOL?

I posted before but my mom (and I) have had an awful year. Her health has rapidly declined. She has had 4 surgeries in a year! After being in the hospital for 5 weeks with sepsis and then a hysterectomy to correct the infection, she has now been in rehab for about a month. The rehab has been very good and takes great care of her. Unfortunately her health keeps declining. She was not eating well which they are concerned about. Her muscles atrophied in the hospital so she cannot walk anymore, has become incontinent which led to a UTI at the rehab (they have given her antibiotics and it seems to be working thankfully). Her AL has assessed her again and they can take her back, but they suggested hospice come in for comfort care. Honestly I welcome them as I know another hospital stay will surely kill her.
I have an iron clad POA set up 5 years ago. There is a trust set up and we are in the process of selling her home that she was living in before going into AL. My question is what else should I be doing before her cognitive ability totally declines? I realize it could be tomorrow or it could be 2 years from now. But the anxiety of this year is wearing heavily on me. When hospice comes on board my first focus is mom but I am also going to ask who I can talk to, as I need to let this all out. As always I know that you all understand and have been through this so thank you for all of your guidance and help.