Similar thing happened to me but not over a shirt.
So my SO and I smoke and we smoke the same brand so we are constantly getting our lit cigarettes mixed up. Last night I had gone to the bathroom and left a cigarette in the ashtray. When I came out I heard ” do you have something glittery on your lips?” She looked at me and said “you have my lipstick on”. I replied yes I do. I like the way it feels on my lips. She said well it has color in it you know. I told her I didn’t mind and that was the end of the conversation.
Keep in mind this all happened while I was wearing a pair of dark blue jegging capris (that she had given me because the were too small on her ) and a 3/4 sleeve scoop neck tiger print top . A very cute outfit if I do say so myself.
Anyway, maybe let her find something and see what happens. I’ve had to ease my SO into it slowly.