How do I deal with a controlling Aunt?

No dont go. How dare she try to force you to be something that your not. Not very christian like of her is it? Stay at home where you can be yourself. I know your mums condition is stressful and it must be hard for you but surely there are places you could go to escape for a while and friends you can talk to. Also your dad sounds lovely and supportive and it sounds like he,s on your side anyway so to put it bluntly. F**k your aunt off and stay at home. To be honest she doesnt sound like a very nice person anyway.