Ino was back. That was enough to calm the restlessness Kabuto had been feeling for the past several weeks, soothing the caged-animal feelings he'd been fighting. To have something finally finished and completed was always relaxing, but this especially didn't leave Kabuto's mind any room to still be frustrated.
Ino was back, and she'd promised to come by. If she didn't, she would have a ninja in her room by dawn; just to make sure she was really still there.
(for one!)