YOU SAID:

if mayu picks a number between 1-4 im killing her

INTO JAPANESE

もしマユが1-4 imの間の数字を選ぶなら、彼女を殺す

BACK INTO ENGLISH

If Mayu chooses the number between 1-4 im, she'll kill

INTO JAPANESE

マユが1-4 imの間の数字を選択した場合、彼女は殺すでしょう

BACK INTO ENGLISH

If Mayu chooses the number between 1-4 im, she'll kill