Wife’s new toy

You sure its the size and not maybe that it's maybe just too hard of a material? I mean, that's basically the size of my cock and I don't consider it that big and no woman has ever had issues with the girth, only some the length if I pound too hard in the wrong position.

My wife's largest dildo is 7.5" long and girth of 9" but its a softer material and she enjoys it fine... however, we have a smaller one that is only about the size you said above, which is of a harder material and she does not like that one.

If it really is the size, I'd say just use lube and go slow - let her use it on herself and see if she can enjoy it, otherwise, I guess what Zeke01 said - get her something smaller. Really though, babies come out of vaginas, so no size cock is going to be much of a problem if she works up to it.