I agree with Scott- you are very detached from them already which sounds like a good thing.
You don't need permission, acceptance or approval from your dad, stepmom, sister or anyone to pursue the qualifications and career that you want. It is disappointing when our families don't support us but that is their issue-you do not have to make it your issue. Do whatever is best for you-you sound pretty strong minded and know what you want which is a great thing. Do what is right for you
