Roommate not paying anything

So I (F23) and roommate (F24) have been living together for 3 months. During those three months she has barely contributed to any rent or house utilities. We’re long term friends who decided to move in together. Only for her to quit her job a few weeks after moving in. As she didn’t like it. Now she still hasn’t got one and I am solely paying for everything to the point I don’t have money for food or transport. She on the other hand has a partner who helps her with those things. I had a massive meltdown today after realizing I had nothing and her partner was able to fill up the fridge for her.

What do I do?