It was a fact that Shu indeed went crazy. Inori didn't know what to expect or think after he forced her void out of her. In a way, she almost felt...violated. It was almost as if she couldn't look at Shu the same way again. No, she couldn't; it was fact that she couldn't. Not after he brutally destroyed the enemy, and beat Souta senselessly.
Inori knew that Hare was dead, and she knew how Shu felt. But she didn't know what his feeling was and how it felt to lose something important. For Inori, she didn't even know true feelings until Shu approached her the night before with hatred in his big, brown eyes. That was when she she felt her first emotion: fear.
She still couldn't understand how Shu could change from a sweet boy, who never wanted hatred and revenge; to the exact opposite. She remembered when Shu's head turned in her direction, his eyebrows scrunched, eyes filled with hate. It seemed like Inori had done something wrong, something that broke Shu from the inside.
She prayed and hoped for Shu's safety, as he was lost in guilt...lost in that guilty crown he wore.