I don't get it.. my "best friend" says she and her hubby hate her sister so much that when she dies…

I don't get it.. my "best friend" says she and her hubby hate her sister so much that when she dies they're giving her to the state and not paying for a funeral... but they'll let her watch their son.. probably bc she does it for free.. but still I told her that was wrong of her and cold hearted.. she pays them 600$/mo for a room in a house that's MAYBE 1500sqft, no basement. median rent here is @ max $1200 but not the houses in this neighborhood. blah I feel so bad for her.