Silent treatment from parent

Recently I (16f) have started planning for university admissions and have told my parent that I would also apply to a university that's approximately 5 hours away. She didn't seem upset at first and told me it should a last resort which I agreed to. But today she cornered me in the car and asked me what I would do at that university, and when I replied she started telling me how expensive it is and blamed my dad , saying he would be mad if I left. I then told her about how it's a backup but she continued talking about our finances and guilting me. What confuses me is I'm most likely not attending there anyways,so why is she hooked on the idea. After that I was crying because she was a bit condescending (lowk my fault for the crying idk why I did that) then she guilted me saying if she loved me why set aside money? Which I feel bad for crying because I know my parents work really hard to support the family with recent events. And now she refuses to be apart of the admissions process or helping research schools. Now I'm on silent treatment for her for two days now and she refuses to let me apologize

What do I do?