Vishnu didn't feel like she was lying, His senses have improved several times after arriving here. Maybe because of the weird energy again so he decided to take her out of the forest. Before that, he had to ask for Jiaxin's opinion too. When he looked at her she was already looking at him nodding at each other Jiaxin told the girl to follow them.
Vishnu thought that he should also call back Fenrir. When he tried to use their connection to feel his position and inform him to come back he sensed something weird. He could feel their connection getting more powerful.
'He is reaching Rank-3!' Vishnu instantly understood. Under the plethora of Alchemy pills, Fenrir has taken it was a matter of time for him to reach Rank-3. No one was as extravagant as Vishnu as he fed high-quality products to Fenrir which could also help it purify its bloodline. Though it won't help too much like reaching Rank-4 it would make it one of the strongest Rank-3 beasts on the planet.