u/Terrible_Part8842

I 19M was sitting down just listening to music not even looking at her she stood like 1m away from me. She took a photo but didnt realize she had the flash on and tried to cover it but it was really obvious. She didnt mean to take a selfie (phone was on her belly height kinda). I didnt say anything bc she probably just speaks japanese and i dont want to talk on the subway. Is this normal? What does this mean?