YOU SAID:

She should have died hereafter.

INTO JAPANESE

彼女は以後死んでいたはずです。

BACK INTO ENGLISH

She should have been dead since.

INTO JAPANESE

それ以来、彼女は死んでいたはずです。

BACK INTO ENGLISH

Since then, she should have been dead.

INTO JAPANESE

それ以来、彼女は死んでいたはずです。

BACK INTO ENGLISH

Since then, she should have been dead.