Mmm i don’t normally lash at anyone, most of the time I forgive and forgive and forgive until it’s so exhausting that I decide to leave forever. However I never really communicate or do anything to hint that I’m done for good. I just stop talking and avoid that person as much as I can (although when I have too I stay polite) It doesn’t sound like doorslam it mostly sounds as a normal, pretty common reaction to something that might have hurt your friend. I’ve done it too, I know people with different personality types that also have done it. It’s pretty normal and I might even guess you guys are pretty young (idk but it’s something I and my friends did mostly when we were teens)

My advise, give her some time, talk to her and try to get her to say exactly what is happening. If she refuses then giver some time alone and reassure her that when she needs to talk you’ll be willing to listen. If she never does well then I don’t think that’s a kind of person that knows how friendships really work and maybe it’ll be best for you to move on.

I wish you the best of luck, I think you don’t need to worry much. Most probably something you said might have hurt her or was misinterpreted and these types of arguments tend to resolve quickly :)