She doesn't appear to have any grounds, however...
If the pictures are no longer needed/accessible, why not just take them down. Granted, I think that they could have been a bit more "courteous" with their request. Threatening people when you are not in the right will get you nowhere fast.
At the end of the day, however, the admins get to make the call.
I totally agree. If they arent needed anymore just take them down. Its not worth any trouble.