How do I deal with my Mom?

Sorry, it sounds like you are having a rough time. Sounds like your mom is also stressed and having a rough time. I don't know how old you are, but you need to make sure you get a good breakfast and a solid lunch, every single day. You sound like you are old enough to wake up in the morning and cook yourself breakfast and fix your own lunch. Then you will be less tempted to snack. I don't see how eating three fruit cups could ever be bad for you. Fruit is a good thing to snack on and I'm sorry your mom called you fat. Even if you are a little overweight, that is not a way to motivate you to get healthier. Let your mom know calmly that it hurt your feelings, but wait to tell her until you and she are both calm. I doubt she really wants to hurt you. Then tell her that you want to be more responsible with your meals. If you show you are being responsible, hopefully she will be less angry and more patient and try to help you. I'm sorry that this is happening to you.