The mother in this case is a member of another board I occasionally frequent when I'm not Mumsnetting.
I know this post can come across as another doom-and-gloom, here's-something-else-to-be-paranoid-about message, but I know I'd not thought about the risk from these when letting DD play with gadgety stuff.
Hazel appears to be out of danger now, by the way (you can see some recent photos in the latest blog entries).