YOU SAID:

I met my friend's mother and we sat and talked for three hours

INTO JAPANESE

友達のお母さんに会って、3時間座って話しました

BACK INTO ENGLISH

I met my friend's mother and we sat and talked for three hours.

INTO JAPANESE

私は友達の母親に会って、3時間座って話しました。

BACK INTO ENGLISH

I met my friend's mother and we sat and talked for three hours.