"Hide is dead"
Touka was seen visiting the hospital and let me tell you why I’m sure it’s Hide.
Ghouls, for one, are the enemy of humans. They won’t certainly be welcomed at hospitals to be treated. Her friends are mostly ghouls who can heal and regenerate their bodies. Apart from Yoriko (who is well and alive), Hide is the only human Touka is acquainted with who is in need of medical attention due to the past battle arc.
Like what everyone is saying, Hide is most likely in a coma and Touka is visiting him in Kaneki’s stead knowing Hide is Ken’s precious best friend.