well- your mom could just be ignoring it so that she doesn't make you even more sad- but get up and work out as much as you can and build up stamina and eat healthy and drink tons of water and when you lose weight she'll probably tell you that she never noticed how big you were untill you lost it all! just do the most that you can do untill you're able to do more- and i used to have that thigh thing too- it really sucked so i feel your pain- it really sucks in the winter- but i just worked hard(with a breackdown every now and again) and now they don't do that! good luck!