For all the right and wrong of measuring/weighing a nephew whom she is obviously close to.. let's just not forget one important thing. The child is overweight. !
However let's not mention it.
Let's pretend it's not real.
Let's 'leave it to the parents and keep our beaks out'
My neighbours youngest was fat. I was a close friend and managed to bring myself to ask if she had had letters from school about his weight. She wasn't offended (luckily) but incredibly dismissive.. 'yes I've had lots of them but they don't understand that all our family are big. He's not fat he just has big bones like me' .. all said , standing in the kitchen whilst her DS climbed on the worktops to access the 'goodies' cupboard and help himself to his 3rd (that I'd seen) packet of crisps.
Sometimes parents can't or don't want to see what's in front of them. To acknowledge it is to admit you have made a mistake in your parenting.
My dear neighbour and her husband were both morbidly obese. So perhaps they felt acknowledgment would mean looking at themselves too.
He is now 17. Quite depressed and has type 2 diabetes. I think he also has sleep apnoea. Both are life threatening.
But hey let's 'mind our own business ' let's stop 'gossiping' and 'shit stirring' because this child obesity epidemic will go away if we just worry about upsetting people and all keep quiet .
Good on you OP. If you had done a routine check on your child's feet for verrucas and found a suspicious lump on your nephews foot.. something that could be nothing but could also kill him early. I expect you would have got a flaming if you had looked it up on the internet , seen it could be something serious but decided NOT to mention it to anyone. Because they might be upset by it..
Get a grip everyone. This is not a mind your own business issue. It's deadly serious. Obesity kills . and on the way to that untimely death is a pretty miserable time as a fat teenager.
We are in serious danger of being the first generation to die before our children since the First World War. Sod people being upset. Sometimes they need to hear it.