Translation of optimistisch

This website helped me learn French. Although most of the users intend to learn either Spanish, German and English some users come here to learn French. I met a few people that helped me with it.
So the man and the woman are staing at the station, sitting at their table and tasting unknown alcoholic drinks, wishing they had the same feeling of joy that they had known before this all happened.
She started to walk with us and one could observe that she had lost some of the naivity many children have, due to the fact that she started to be a sales person long before she reached twelve.