Translation of centésimo

I came on time and two hours later I arrived at Tuxla Gutieres. I was always suspicious here and I never knew whom to trust. Somehow I got to the airport a few hours too early but this is better.
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.
We left and went back to the boat which took us back to the big vessel. We started our journey back to the main land. It was already late and from the main land, it was still a four hour drive back.