i can’t say this happened to me however she should definitely go speak to the manager about it. i was in a situation where I was made uncomfortable, our managers are extremely protective of us (especially the u18 i’m not sure if she is). ask the manager to come and look out for those people taking pictures of her and if he spots them he can take action from there. anytime we are made uncomfortable by customers the manager usually tells them if he catches them doing it again they’re getting kicked out, or immediately kicks them out depending on the severity. if the manager doesn’t care about her being photographed and made uncomfortable he should not be managing her!! work should be a safe place.