You must remember it is Joao who is making the statement so the word "his" can be interpreted in 2 ways.
My Portuguese speaking friend has replied with a translation that puts a new light on what is being said by Joao.
"During the time that he remained in the village in search of the missing child, he did not notice anything abnormal or different, nor was he commented on any suspicious situation. (Lines 32 and 33)
The dwelling where the child disappeared and the surrounding area was isolated after the arrival of the GNR, and inside the house some people remained, supposing to be the parents of the child, some friends, and the Administrator of the Ocean Club, Having later his wife Ms. Silvia Batista been called to the place to do the translation. (Lines 34 to 37)"
So I picture that as being Emma Knights (the Administrator of the Ocean Club) later called Joao's wife (Silvia Batista) to the place to do the translations.
The area was isolated but there remained people within the cordoned area "the parents of the child, some friends, and the Administrator of the Ocean Club" and later SB because she was called in.
Originally the translation was: "That the room from which the girl disappeared was sealed off after the arrival of the GNR, as there were some persons inside the room, whom he supposed were the girl's parents, their friends, the OC Administrator, who had called his wife, Silvia Batista, to come to the site to help with translations."
So the difference for me is that "the OC Administrator, who had called his wife, Silvia Batista, to come to the site to help with translations." may or may not be the same person who call Sylvia earlier when she was in Lagos.
Compare that with:
http://www.mccannpjfiles.co.uk/PJ/JOAO_BATISTA.htm translations of lies 23 -25.
"That he knows about the situation in the OC relating to the disappearance of the little girl, having been informed on the same day, at about 22.30 by phone by the OC administrator, who had contacted his wife, Silvia Batista."
Is the "the OC administrator" in both cases the same?
I wouldn't say I am fully convinced of the new interpretation yet. Can you see any other way of looking at it?