YOU SAID:
What is your mum's name?
INTO JAPANESE
お母さんの名前は?
BACK INTO ENGLISH
What's your mother's name?
INTO JAPANESE
あなたの母親の名前は何ですか?
BACK INTO ENGLISH
what is your mother's name
INTO JAPANESE
あなたの母親の名前は何ですか
BACK INTO ENGLISH
what is your mother's name
That didn't even make that much sense in English.