First; Calm down. You don't seem to have your head screwed into the right place at the moment. Take a moment to collect yourself AND BREATHE.
Then THINK. Do you want to end up like all of the cases on this forum, where hospitalisation is needed? I'm guessing not. Meditate. Think of other things. Don't starve yourself tomorrow, just make sure that you are feeling calm and collected before you eat anything. Starving yourself will just lead to negative feelings later on when you NEED to eat something.
Have a decent breakfast, something filling with eggs or something like porridge. Add fruit if you like, but keep the filling base to the meal.
With the purging thing. I have been there, it ain't easy. Do something that will distract your mind, that absorbs you. Personally I draw or paint.
Now, the difficult one. Stopping eating. I'm not talking about stopping yourself eating all together, but stopping yourself going past that 'point.' One way is trying to mediate your leptin levels.
Leptin is the fullness hormone, that says enough when you are eating. It is a slow chemical to act, so chew your food thoroughly. When you put food in your mouth CONCENTRATE on the flavour. Take the food apart in your mouth and analyze the sweet, the sour, the bitter, the savoury, the salty. When I eat chocolate I just take one square, bite once, then let the chocolate melt on my tongue. I then savour it all. I go for dark (85%) due to it's deeper flavour.
If you still want to starve, let me tell you something. I currently need to have a coffee or a tea before I eat dark chocolate because my average body temperature isn't high enough to melt the chocolate. An issue brought on by the ED. Please, enjoy your food.
Also don't blame your mother, she does not know. Tell yourself what YOU are in control of (your emotions, your voice, etc).