Look through the questions and many of them mention specific passages. Mark those sections in the reading first and then read the passage.
Tons of little tricks like that.
Further, to improve thinking, she needs to do a post-mortem after every practice session. Go over every question, and irrespective of whether she got it right or wrong, she needs to figure out how she could have thought better and faster.
The "trick" for me on tests like that was to skim the reading and note key items (dates, names, topic terms) and then review the questions. Most of the time I could answer them directly, but if not I could go back to the reading and find the answer. Having skimmed it, I could jump straight to the relevant sentence(s).