DD aged 12 and DSD aged 11 are in year 7 at secondary school. They are both off poorly today. They have just come downstairs and told me that someone has sent a picture of a male year 8, genitals to one of their group chats. The boy had sent it to the girl and she then sent it to the group chat. How do I handle this? Shall I call the safeguarding lead at their school? I'm thinking of all the children involved as I am sure the boy doesn't want his genitals sent to everybody.