Breaking up but gf feels entitled to “alimony”

Recently broke things off with my girlfriend of many years. We met in college, and she was studying to be a nurse while I was premed. I went to med school and she got a nursing job in the same city. She didn’t really want to leave our home state, and her family, but we essentially planned to be together forever so she followed me.

Long story short is we functioned like a married couple. Except she made the money, cleaned, cooked, and kept the social calendar bc I was too busy with school. I had loans to pay for my school, rent, and food, but it wasn’t a lot. So she paid for all nice dinners and vacations with friends (that she wanted us to go on, I never asked). In return I promised her she could be a stay at home Mom, and I specialized into something fairly lucrative so she knew her investment would be worth it in the long run.

After 13 years, I’m finally making doctor money and have time to actually spend with her relative to med school and residency. We simply want different things now. I’ve decided I want to stay in the city we are in now for a few more years, and she wants to move home and have babies now. We ended up fighting all the time for nearly a year. I finally broke things off.

She is asking me to financially compensate her for all the time and effort she put in helping make things easier at home so I could reach my goals etc. I see where she is coming from, but we were never married. And I also don’t have money to blow right now…my student loans are $$$$. What should I do?