What should I do now?

Definitely not, that was completely not okay for her to say that to you. No one ever deserves to have that said to them. I think you made the right decision to not be friends with that person. As for making new friends you know just open up and make connections with people. Such as in classes or whatever or heck even making friends online works out a lot, I know that I have a lot of them.

It might've not been right for her to do it, but face it. Friends are friends. They're gonna say stuff to make you mad as you'll do the same. The question is, are they a real friend? Real friends stick around, through the long and tough. Now, are you going to keep her as one? It's your decision. My advice is to accept her apology and make up for lost time. I wouldn't trade the world for my friends. Trust me. it's better to have an average friend then walk on this road all alone.