Me personally I don't mind if my mom changes my baby (but i'd rather do it myself she only does it once in a while) I obviously don't mind if my husband does but I DO mind when his mom wants to change my baby's diaper . She always takes my baby from me and goes into another room then comes asking for a diaper it's like okay i'm her mother I will change it my damn self . And one time she was telling her husband to change my baby and he said no because she's not his daughter (at least someone is respectful) , like thanks if you're trying to help but in my opinion you should always ask the babies mother if it's okay not just assume it is and do it.