Minor problems with paternal family

I live with my dad, I have my minor problems with them. You see my dad and grandmother are very codependent, in fact I would say my entire paternal family is pretty codependent on eachother, which I personally dislike. My dad, grandmother and aunt all have keys to eachothers homes. My grandmother and my dad have both helped me with my w-3 form without asking me, my dad even did all the paper work when we were at the employment, office(filing for unemployment) again without asking me. My grandmother (being an accountant) has done my taxes which I think is the only thing I am ok with. Whenever I speak about living in another state they will always say something along the lines of "other states are too cold compared ours" or "you won't make as much money in other states" or my favorite "so and so lived here and they said that they wanted to come home after a few months/years". I'm currently going to college but I feel like I'm being set up to be semi-dependent on my family. When I used to live with my step-dad and mom almost full time I never felt this. they had me do chores and as much as I hated it they had me do things that made me uncomfortable which were good growing experiences that I don't experience anymore living with my dad. Another thing, ever since I was diagnosed with autism when I was 11 my grandmother has used it as an excuse to coddle me and my dad just goes along with it. If I get a tiny bit stressed they all freak out and try to calm me down which is so ######6 pathetic on there part I think. I'm not a child I can deal with discomfort. I don't know what to do I want to be more independent but I feel like it won't end without a fight. They aren't bad people they are just very intrusive and they think that they know what's best me, which maybe they do but I'm not given a chance to figure that out for myself