YOU SAID:
robin was not that happy since it
INTO JAPANESE
ロビンはそれ以来、それほど幸せではなかった
BACK INTO ENGLISH
Robin hasn't been so happy since
INTO JAPANESE
ロビンはそれ以来とても幸せではない
BACK INTO ENGLISH
Robin hasn't been very happy since.
INTO JAPANESE
ロビンはそれ以来あまり幸せではありません。
BACK INTO ENGLISH
Robin hasn't been very happy since.
Well done, yes, well done!