If she hasn't bothered to make any serious connection with you then I'd uninvite her. You are about to do something so amazing and you need people around you when this happens that you want there and have a connection with.

It isn't like having a pap smear and having the nurse ask if it is ok if you've got student nurses in there with them so they know the best way to do it without hurting you. This is you birthing a wonderful child into this world!