Are these three sentences correctly worded?

While the group built a raft that they could use to journey down the river, Malik caused Arietta to realize that she was not a Chosen of Siamorphe. For the next several days, the four companions traveled down the river, and during that time, Arietta and Joelle developed a passionate affection for each other. When the group arrived at site near the Underchasm where they had to go ashore, they discovered that the Shadovar and the orcs had learned their whereabouts.