Peacesoul is right sweetie, that caffiene will be making things worse and protein bars are not meals. I just want to give you a huge, big hug, I know what you are going through, but anorexia is a huge, huge battle. You need to focus on one thing at a time. Try some soup, it really helped me when I was in that dark place when food was so, so scary. It can be low cal, and nutritious and doesn't give you that scary "full tummy" feel.
I sorry about the fight with your momma, that can't be helping you. Sweetie, just focus on getting through today, eating a little, doing what needs to be done right now. Let tommorow take care of itself. You know you have support here and at home. If you need to fall, your family will catch you. If you don't eat..you will get sick. Bigtime. Gentle steps, small sips. Huge hugs
Bless, hang in,
Meg