YOU SAID:

My sister is so stressed out I do not know how to help her.

INTO JAPANESE

私の妹はとてもストレスがたまっているので、彼女を助ける方法がわかりません。

BACK INTO ENGLISH

My sister is so stressed that I don't know how to help her.

INTO JAPANESE

私の妹はとてもストレスを感じているので、私は彼女を助ける方法がわかりません。

BACK INTO ENGLISH

My sister is so stressed that I don't know how to help her.