aircraft engineering or aerodynamics degree, Aviation management or something that could lead you further up the tree in future, or keep you within aviation initially. I would join the forces if I had to start again. I started just before 9/11 and had a really hard time doing all sorts of crap flying jobs for no money etc. I had to work abroad and I was doing three jobs while studying my ATPL's.
However, now I have three type ratings and a nice job. You have to give it your best shot, and sorry but Mums do not know what is best, they think they do but just like to be in control. It is your life, make your own decisions...she wont be in the cockpit with you! (I hope)
