AITAH for getting mad at my friend for not washing her hands

im f19, and i went ot the movie theaters with a bunch of friends. and bascially, i had to use the washroom, so me and this girl (f19), lets call her penny, she also came with me too, and we both used the washroom and i finished using the washroom first, and she came out the stool and all the sudden she was touching me wiht her hands? i was so confused bc she just came out the stool like where those hands go and i def felt uncomfortable and i diddnt wanna say shit nad then fterwards she washed her hands, so it felt so weird, and then idk after that ive been really mad and i have not been talking to her much, AITAH?