Well of course she's going to treat Kaneki different seeing him since he was supposed to be dead(assuming she got the news he's alive by Nishio probably 1-2 days ago when he was attacked by him.) The sad thing is that she probably will have to keep her feelings kept inside since Yomo has warned her that he senses Kaneki isn't really " there " . (Hence why he sat down across from him and examined him for a few seconds.