On a serious note I think it’s fine - she’s having fun, her DD was having fun - her mum is a celebrity after all, a fact I imagine everyone knows, she probably didn’t mind showing her mum off.
I really feel very uncomfortable when women of a certain age are critiqued for not behaving the way people THINK a woman her age should behave.
I also think if it was for example a male footballer at his son’s 18th kicking around a ball with his mates - think David Beckham - everyone would say what a great dad he is.
As a side note - why is Murder on the Dancefloor suddenly being played everywhere?! Did I miss something?