YOU SAID:

my mom is not really good with other people's kitchen

INTO JAPANESE

私の母は他人のキッチンがあまり得意ではありません

BACK INTO ENGLISH

My mother is not very good at working in other people's kitchens.

INTO JAPANESE

私の母は他人のキッチンで働くのがあまり得意ではありません。

BACK INTO ENGLISH

My mother is not very good at working in other people's kitchens.