Ex blaming me

My ex had an evil family member that I’m not going to get into talking much about but the family member cannot handle me existing so I have to stay hidden. I waited 5 years to live together with my ex. Was told the family member would likely go in a nursing home in a year as they are 80 years old rn and have dementia. My ex told me now that isn’t happening and it’s too cruel. Well I said I’m not waiting more than a year at this point to live together so we have to end this. The family member ends up sick and I get texts from my ex almost like a gypsy rose situation claiming I prayed for the family member to die which obv I didn’t. And is blaming me