Gaara was used to not being treated well by his home village. It was just a natural part of his life. Aside from you, everyone viewed him as some sort of monster. It wasn't his fault that the sand did whatever it wanted against his will. He walked into the hospital, you were injured on a mission. He wanted to see you, make sure you were okay.

The crimson haired Jinchuriki looked saddened as the hospital tried to refuse his request to see you. He hadn't done anything to any of these people. He might have put a few villagers in the hospital recently but that had been purely by accident. The sand had just reacted.