Someone I know has two teenagers. Aged 14 and 16. Since they were 13 and 15 they’ve been left on their own several times a year for up to 2 weeks at a time. This is while their parents (mum and her partner) go on holiday. They are partly working holidays for the parents’ jobs. The children don’t have any family nearby, their father isn’t around, and if something goes wrong they have nobody. Should I be worried/do something about this? Or is this ok?