Id be furious - I have no photos of me or my kids online and I do not expect others to post them online either!
Esp as she didn’t know some of these people - I would contact the mother and tell her that you are not happy with this in-line presence and could she just stick to photos her daughter and grandchild if they are consenting but not the rest of you!
Last weekend, in Rutland, the first statue in Britain of the late Elizabeth II was unveiled.