The promptness and confident tone Janius used in his response was certainly helpful, but Zharanthixil was not entirely convinced. He still has the suspicion that something was awry, even though what Janius said sounded perfectly reasonable. After all, he knew Humans had poor swimming skills, so he would probably need any sort of advantage he could get to even think about keeping up. A part of him wanted to keep pressing the issue, to keep asking questions, but an even larger part of his was simply concerned about the safety of his daughter. He just wanted to get her back to the village to help bring her back into good health. 

"Very well, let's just get back to the village. The other search parties should be returning in a few hours." Zharanthixil responded. All of the inconsistencies, however, were not out of his mind completely. He was not thinking about most of them at the moment. The speed his daughter was capable of, her sudden decision to run, Janius' peculiar decisions in chasing her, all of those elements could lead to certain suspicions. Even if he was distracted for the moment, his mind would not ignore those issues forever.