SD is 8. At BM's, she pretty much does everything, cleans, takes care of her bro5, gets whatever so BM can stay on the couch, laundry, etc. Sooo when she comes over here, we find ourselves dealing with an 8y/o adult!! She tries to shadow my son, who is 17mo., to the point he gets frustrated and bites her, she tries to boss the other kids to the point that don't want crap to do with her, she tries to sweep, carpet clean, even cook!! The breaking point was when she tried to pick up my son who didn't want to be picked up, dropped him, and broke his arm!! It was NOT intentional or malicious, but I am sooo angry!! DH and I have both explained that we are VERY competent parents, and if her help is needed, we will ask for it. She just shrugs and says "This is what I do at Mommy's". We just are very frustrated!