There were very few people here that Illyana actually cared for. In most cases if they came or if they went was of no consequence to her. Mono however was one of the few that she would count as someone she cared for. There was a lot in him that reminded her of herself, for better or worse. When she'd noticed he was gone it hit her with a wave of sadness that took her time to process. Of course processing for Illyana simply meant avoiding others and avoiding discussions about anything that might be wrong.

It was a healthy way to handle things.

No it wasn't.

But it was her way. One could only expect so much from someone that grew up in a pocket hell dimension. At least she hadn't just run away completely. She'd still stayed around, occasionally looking for him both on foot and with various spells. One particular spell she'd set up around a talisman using something he'd owned while here. That particular thing she tucked in her pocket, hoping that maybe one day it would glow. Lo and behold it did! Immediately upon the first pulse she scrambled to follow it's trail to the sewer entrance where she saw him stumbling out.

"Mono?" she called out as she teleported the final distance to him. She reached a cautious hand out towards him to place it on his shoulder. "What happened to you?"