Translation of reventa

At around seven, it wasn't dark anymore, the mother of the family offered me some tea. I felt so uncomfortable coming to a new family owned casa and vomiting there all night, but I was really sick.
I think that subconsciously she means that her pregnancy has become a white eleph. But even though she compares her pregnancy with the large, grey animal a moment later she regrets it and says it.
Sorry for bothering you with so many questions. You are going to be my first online language course. The more I trust you and your website, the more I will use it and recommend it...No problem...