Translation of desmayarse

In this email I would like to tell you what occured to me in Italy during the summer vacation last year. So, I went to Italy for four days. First I stayed in Firenze, than I decided to go to Rome.
I just saw the Arsenal match. It was very boring and the atmosphere in the stadium was weak. I think that it was mainly due to the cold and not due to the quality of the game. But it was worth it.
The young women rowed towards us and tried to sell food and souvenirs. We were not interested and she tried to block us and prevent us from swimming back to our vessel. So we dove beneath her.