Hi Amy,Welcome
I'm so sorry to hear what happened to you. Don't let what happened to you continue to destroy your life. Fight back. You are so young and have a lot of life to live.
You can fight back by taking a Martial Arts self defense and fitness class. This can help you in several ways to become stronger both mentally and physically. It can teach you how to defend yourself while losing weight.
You already were doing a good job at losing weight, you just need to get back there mentally.
Try to not put all your focus on just losing the weight but taking back control of your life. Don't worry about your skin it will tighten back-up, It just takes time. Don't worry so much about what a stranger thinks of you.
Best of everything to you,
Lynn