As they approached the second layer, Warden parted ways with Agnes and Jenni, maintaining his role. On their last day of travel together, they encountered quite a few people, leading him to conclude that being seen with Agnes could jeopardise their plan.
He made sure nothing nasty was left inside Jenni's channels that would hamper her anymore before departing. The girl had been strangely quiet the last couple of days after her injury. While she sparkled with her bright personality every now and then, she seemed to have made up her mind about becoming compliant and docile while interacting.
Honestly, Warden liked her more when she was more wilful and talked her mind. She probably felt indebted to him for healing her. She even bowed deeply on his departure. Perhaps not opening up to her about his identity was a good choice. Warden deliberated over before departing, but decided against it, thinking she might become confused about how to act with him.