YOU SAID:

miki is my sister and she is 14 years old and likes to back yummy treats

INTO JAPANESE

ミキは私の妹で、彼女は14歳で、おいしいお菓子を食べるのが好きです

BACK INTO ENGLISH

Miki is my sister, she is 14 years old and likes to eat delicious sweets

INTO JAPANESE

ミキは私の妹です、彼女は14歳で、おいしいお菓子を食べるのが好きです

BACK INTO ENGLISH

Miki is my sister, she is 14 years old and likes to eat delicious sweets