Your story is indeed sad, but now that you are living with your grandparents, perhaps you can have a happy ending.

The most important thing to remember is that none of it is your fault, you are not born bad, you can rise above all of this and be anything you choose to be. Fate sometimes deals us ugly hands but no one says you can't twist fate into something that suits you better. The fact that you are still here and didn't kill yourself is a testament to the will inside you.

I hope for a happier life from this point on and good luck with whatever you choose to do.