That is a point I had missed, but you are right. In all the other statements, there are thumbnail boxes to the left of the main text you can click on to enlarge and small passages of the main text comes up, always written in English.
Those thumbnail boxes to the left, for a long while, were absent completely from the Gapar statements, or certainly from Katriana Gaspar's statement. Then, miraculously and without explanation, they appeared. Written, as you quite rightly say, in Portuguese:
Here is an example.
Still more odd that Kariana's husband said, in his statement, that he 'had always trusted Dave', while his wife said, well, what she said ....