It makes me sad that Renesmee doesn't have any children her age to grow up with. I mean of course there are children, but Renesmee is YEARS ahead of them mentality. And even so, she'll only appear that age physically for a number of weeks/months before she ages (and continues to do so until she reaches full maturity). Even though Renesmee is clearly loved and adored by her family, I think it would have been nicer for her to have friends her own age to hang around with.
The sad thing is this is almost impossible given how fast Renesmee ages and how advanced mentally she is.