Last night, my girlfriend told me happily that she had gone swimming, and then she wore that short skirt. Later, she came home without changing clothes, but wrapped in a bath towel.

Hello, I'm glad to answer your question. Your girlfriend throws clothes, probably because your tone still hurts her to some extent (although you say your tone is not heavy), but sometimes it is. You may be joking, and you may make her unhappy.

So the solution is that you apologize to her, show that you didn't mean it, and support her to dress up within your acceptable range.

Specifically, you still need to do it yourself and adopt.