J.M.
hope for the best and maybe talk to her about improoving things? You said her husband is good now and so is she, so why not think positive? There's nothing a pity party will do except make things worse.
I get the being jealous. My brother and his kids live with my parents and they rarely see my daughter. It makes M. sad at times and I've spoken to them calmly about it but I dont see them making an effort any time soon