Did she say,
"I really liked that skirt until I realized you were wearing it,"
"I really liked that skirt until I realized that you were wearing it."
"I really liked that skirt until I realize that you were wearing it."
In the first statement, she is jealous that you "claimed" the skirt first before she was able to. (Girls can't wear the same clothes for whatever reason. )
In the second statement, she is a klepto with a boundary issue - steer clear. She may steal the shirt off your back!
In the third statement, she is being genuinely rude.
These things are so hard to "read" over the Internet. My sense is, she feels insecure being in a foreign land and is trying to get the upper hand in the pecking order over you, in an unscrupulous manner...