Sounds like you are in a very tough position! The family you married into sounds very dysfunctional, with a lot of anger issues. As a parent, it is your responsibility to ensure that your child is safe and secure at all times. Leaving your child with your in-laws sounds like it may be disasterous! You cannot change their reactions to your decision and just have to be firm about it. You don't owe them any explanation...it is your child and your life. Your mother in law may get angry, but that is her problem, not yours! Be strong and do what is right for YOU and YOUR family! You have support here!!!