MIL has insecurity issues about beauty, cooking, and our kids. She turns everything good into bad and tells everyone the opposite. If I look good she says I am unhealthy, if my food is delicious she says I can't cook and avoids my dinner invites and throws away given food. She praises below average tasty food and appreciates the cook. She doesn't give her grand kids birthday presents instead interested in just attended the party to socialize with their friends, very curious about my day-to-day life and social network. She keeps her own kids apart from bonding with each other and their families then she seems curious about if we talk to other siblings in family. what's her problem and how to deal with it in a way she starts respecting us.