I mean, I don't think anyone would break in and snatch them. Let's face it, they would probably bring them back straight away but it's pretty unheard of in the UK that kids are snatched from their homes. However, the likes of Charlotte should be vigilant because she has put everything out there to strangers and mentally ill people who might just show up at her house.
It's actually known that YouTubers can have stalkers.
I heard of this singer YouTuber in America, she had a stalker whom she thought was sweet and innocent and she ended up getting shot by him and died.
Break ins asides, kids the age of Stan and Daisy should have an adult around, not one that's taking a bath. Why cant she play with them? She hardly spends any time playing with them so you think she would make the most of it at the weekend. There is a time and place for her to have a bath, like when they are in bed or Mark is at home later!
Probably had the TV on and the tablets in front of them which is why she thought she had a sufficient baby sitter