YOU SAID:

my mom just bought a snack for me

INTO JAPANESE

私の母はちょうど私のためにスナックを買った

BACK INTO ENGLISH

my mother just bought a snack for me

INTO JAPANESE

母はちょうど私のためにスナックを買ってくれました

BACK INTO ENGLISH

my mother just bought me a snack

INTO JAPANESE

私の母はちょうど私にスナックを買ってくれました

BACK INTO ENGLISH

my mother just bought me a snack