Puppy Rejected

My daughters dog just had a littler 4 days ago we didn’t know she was pregnant when she came to live with us from an abused home she is only 11 months old and has rejected one of her pups the runt as we call it. She kicks him off every time he tries to latch she has even stomped on his chest any help please. She is a staffy x sharpei and the father is a pure Rottweiler as we found out.

My daughters dog just had a littler 4 days ago we didn’t know she was pregnant when she came to live with us from an abused home she is only 11 months old and has rejected one of her pups the runt as we call it. She kicks him off every time he tries to latch she has even stomped on his chest any help please. She is a staffy x sharpei and the father is a pure Rottweiler as we found out.