Ask her if she plans to pay for those loans required to do what she wants.
And frankly the fact that she went as far as to issue an ultimatum simply because she will temporarily(?) be making more money then you is ridiculous...
It makes me wonder why you stuck with this woman as long as you have, because that is insanely controlling....
Honestly I would NEVER have let myself stay in a relationship with someone that is that controlling for as long as you have. I would have dumped her in a couple of months if that....