(Original post by AnharM)
Love your approach about it.
I don't know how I'll go about it. I've been brought up by a religious, traditional family, so my mum and my sisters would expect me to come back. But if I really like it there, and I have some great friends there, I wouldn't want to move back.
I'm mostly worried about who'll take care of my mother, my sisters will eventually move out because they'll get married by the time I graduate.
I think these are all bridges to cross when you come to them.
I presume that your mum isn't likely to need care 5 years from now? If not, go off, live your life, and when she gets older and a bit doddery then start considering your options - be that moving back to the same city and popping in daily, finding somewhere with a granny flat that you can move her into, or something else, or a combination of approaches. You may find that your sisters are living nearby and are happy to help - though in my experience of looking after ageing relatives, you do need more than one individual to be contributing.
As for family expectations... meh. This is your life to lead, not theirs, and you need to do what makes you happy. Would you really pass up a good job offer in another city just because they wanted you to move back? I certainly wouldn't.
Go away to uni, and when you get to final year start considering your options. You might want to move back home again, your mum might have fallen under a bus (or be fighting fit!), you might get a job offer in New York (you can but dream!) or any number of other things might happen that you just can't predict right now - so make a decision later on, when you can make an informed decision.