YOU SAID:

my mum is also in the same room thing as you're the mother

INTO JAPANESE

私のお母さんもお母さんと同じお部屋にいます

BACK INTO ENGLISH

My mom is in the same room as my mum

INTO JAPANESE

私のお母さんは私のお母さんと同じ部屋にいます

BACK INTO ENGLISH

My mom is in the same room as my mum