Try to avoid her as much as possible. She probably doesn't understand that you are fighting a very hard, invisible battle every single day of your life. You're not lazy. Try to find something to help you take your mind off of her. Sometimes I just lie in bed in the dark and focus on my breathing and relax. I usually find it best to be alone. But, your mother in law should definitely learn to understand that you live your life a certain way because you have to; not because you want to. I hope things have gotten better with her and I hope you are feeling better.