You either feel sorry for yourself, stay quiet, get bullied and not listen to advice you are given and let this girl win.
You pick yourself up from the ground and DO SOMETHING ABOUT IT.
The girls who said the same as you and went through with it, will never have the chance you have to change it...
If you gained friends, then no. Everyone does NOT hate you, but you are letting this girl win.
Your family have their problems that is why they are not together, if they had money they would do something, so they ARE paying attention you are not.
The funny thing is, if you told your parents EXACTLY what was going on as well as the school, you would actually find a word you are missing called SUPPORT.
Which after all is why you came here isn't it?