God Bless, I'm praying for her, you and your family.
I lost my sister the same way, she had
Clostridium difficile coliti ( C diff ) she blew up
Like she was pregnant and then it busted. Our my was with her the time, she thought she just passed a lot of gas. She was in the hospital and they just left her laying there, eventually we moved to the next town. She had surgery but it was to late, my lovely Judy:)