Aunt flashed me?

I have an evil aunt whom I dislike due to her character extremely nosey and judgmental to the point where that's all she spoke about.. others. Okay anyways My aunt one day was weirdly hanging with me and 2 cousins at the time we must have been 4-5 possibly 3 I don't know but My aunt was talking to us about how we'd one day grow and become woman. She decided to flash us and show us her boobs to show us what awaits us and i remember all of us just laughing and being shocked. My mom wasn't present so when i seen her i told her and She was confused but laughed as did I from what i remember. I look back and im grossed out now and kind of creeped out? I don't know if im over reacting doe and this was harmless ig? I don't know what do you guys think?
Aunt flashed me?
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