I don't care about what's going to happen to Touka she has been so irrelevant to the manga thus far and most of her scenes rely on nostalgia.
She literally just broke into Cochlea to help save Hinami last arc. Everyone else probably would have been cannon fodder if she didn’t shoot lightning all over the joint and fend off 2 Special Class Investigators.
Sure she hasn’t been around much in :re and she’s back at the cafe communications for this arc but already has multiple plot points set up with her character for afterwards. Yoriko trying to find her. Once Akira wakes up, a confrontation between Mado, Rabbit and Hinami which has been an ongoing plot thread with dropped hints for … over 200 chapters? Whatever she wants to talk to Kaneki about. The shit going down with Mutsuki and the fact that Mutsuki suspects (or has already investigated) :re as Kaneki’s hiding place.
If you think she’s irrelevant that’s your own fault for dismissing what’s been set up.