Sarah hi, and welcome back - though I think we'd all here far rather you DIDN'T come back - as in, we'd far rather you'd escape from your Care Prison and were actually having your OWN life finally....so I'm really sorry to hear that you are still in that Prison.
Sarah, though, the dreadful thing is that, as the others are saying, and as we said before, NO ONE WILL RESCUE YOU.
I do feel that you are still 'waiting in vain' for your appalling aunt (I DO SO HOPE she ends up with no one to lift a finger for her the selfish cow!) or uncle (ditto!) to come and rescue you from your gran.
They won't.
Sarah, can you look at the situation from this angle? What strikes me is that you are, sadly, behaving as a 'child'....I don't mean that rudely ,but bear with me. 'Children' don't make decisions for themselves, they do what their 'elders' tell them to do.
I feel that's what has happened to you. You are rejecting finally 'growing up' and staying with being a 'child'.
As a 'child' you meekly put up with your grandmother, put up with your vile aunt and uncle etc, and meekly sacrifice yourself for them.
I do think, quite truly, you really do have to 'grow up'. Grow up and take responsibility for your life - not wait 'meekly' while others (your gran,aunt and uncle) make decisions for you (ie, they've 'decided' they want YOU to be their victim, so that's what you are....)
I do realise that can come across as 'harsh' - but SOMETHING has to 'shake you up' and 'wake you up'. Your precious youth is passing you by. But you CANNOT stay a 'child' for ever, being bossed about by the 'grownups' (your aunt/uncle/gran).
Being grown up is scary, as it means taking charge of your own life, but it has to happen sometime. It's WAY overdue for you!