YOU SAID:
oh no im stuck step sis
INTO JAPANESE
ああ、私は義理の妹に立ち往生しています
BACK INTO ENGLISH
Oh I'm stuck with my stepsister
INTO JAPANESE
ああ、私は義理の妹とくっついている
BACK INTO ENGLISH
Oh, I'm stuck with my sister-in-law
INTO JAPANESE
ああ、私は義理の妹と行き詰まっています
BACK INTO ENGLISH
Oh, I'm stuck with my sister-in-law
You should move to Japan!