Oh my gosh! Your own mother says that to you? Listen, you probaly eat more because your family and people and school are making your self esteem lower and lower, so you eat more because you're depressed, and you're depressed cause you eat more. I have one thing to tell you...show them all. Show your mom and everyone that makes fun of you that you CAN lose weight when you want to and they shouldn't make fun of you like that. Show them all:).