Its terrible trying to deal with unruly kids. I should know I have one
(she's good most of the time but there are times when there is nothing I can do but sit back and watch the carnage)....anyway I would never expect someone else to do my parenting for me.
Its sounds like the mum took her whole family kicking and screaming to the shoot so she only has herself to blame for the result.
I hope you have better luck with the next family