When they find the child

The Avengers end up finding a child on there doorstep that has blue rabbit ears and green eyes. This child has two forms a robot and her human form. The Avengers are in for a ride when they find out that this kid is wanted by H.Y.D.R.A. so will they do what they can to protect the kid or will the hand the kid over to H.Y.D.R.A.