Hi Paige,
I'm glad that you have found this site. Here you can vent all that you want and those of us on here will do our best to support you. I have not been in your shoes but did lose my husband to cancer a year ago and my mom within weeks of that. I remember trying to be there for both of them as they each battled their own health issues and feeling so torn. The grieving starts long before the actual loss, and anger is a normal feeling. I wonder if your husband is just feeling inadequate and truly doesn't know how to make you feel better. You are so wounded right now wanting your mom to survive but in other ways wanting her to just not hurt anymore. It's difficult to find the energy to put into anything more than caring for this lady who gave you life and yet I'm sure your husband is probably feeling shut out. Men think so differently from us and with it not being his parent that is so ill, it's probably difficult for him to understand that you are not really attacking him, it's that you feel so helpless and frightened.
I'm sure that others will answer your posting also with their words of support. Just know that we are here for you whenever you need to talk.
Hugs,
Tracie