Sometimes the social struggles are because she's too mature for her age peers.

Social struggles in primary school also have a habit of sorting themselves out in intermediate school, where ability grouping and tracking becomes common.

It works out very well for gifted kids in most cases, but can go tragically badly in some. It's all individual. I can say my mother rejected skipping me, I did skip my own DD8, and I think both actions were correct for the individuals involved.