Translation of circumstantial in Spanish

She suddenly had to vomit and unfortunately she vomited on the new shoes of our friend and on her new Jeans. It was very embarrassing, especially because we were treated so well by this nice young man.
Basically, I am here to learn Italian and French... some other languages as well, different cultures and meeting nice people. So far, I have made some friendships with Vocabulix, but I am always looking for more.
We blamed the sandwich which we had eaten a day earlier for lunch in Bolivia for the stomach ache of my wife. She became very weak and she had to stay in the hotel for two entire days.