I am starting to have some major sibling issues with my healty child being very, very jealous of my kid with health issues. Abi says she wishes she was sick, too, but it's also manifesting in aggression and anger towards Nitara even with normal stuff. Like today I took Abi to a movie with a school friend and her mom, and then we went out to eat afterwards. Yesterday Abi attended a bday party and Nitara did not go. Abi gets plenty of extra attention and praise for being who she is and doing the things she's good at. Today when we got home from the movie/dinner she saw that dh had spent time with Nitara building stuff with Legos. She was extremely jealous of this and next thing I knew she was telling me she wanted to leave this family. She says that a lot. What do I do? I need some help before this destroys their sibling bond and creates a bigger problem in the family. Nitara adores her older sister and is very often crushed when Abi is just plain mean to her for no reason.