I known Touka still love him and she waited for him for three years, but I think she would hate him for eating Eto's bottom (Eww, I would be pi**,too.) and him being suicidal.
I would see them have a love-hate relationship again like the past,because I would see she need to help him with his PTSD (or if he is blind) and Touka will always be there for him.