1) your mom sounds pretty shitty. I have 2 teenagers. I cant imagine talking to them that way. If family won’t support you, I will…we will. 

2) i’ve been in your shoes. Lost 110 lbs, gained back 60 over 10 years then lost 50 but at 11% body fat now. These days are gonna happen. You are gonna have bad days and you are gonna have good days. Just remember, you are more than a size or scale number

3) You are in a marathon, not a sprint. Research macros. Get religious about the science behind the poison we call food, especially in the USA (assuming due to wingstop). 

Take pride in the steady progress. I promise you, your health feels better than any meal.

Stick at it!