Mira's eyes widened in surprise when she saw Tohru skidding into the classroom and across the floor like a hockey puck. The pink haired girl might actually have worried if Tohru didn't seem to be amused by her falling too. "Ru-Chan..." She got up from her seat and walked over to her, kneeling down beside her, "If I would have known you to be clumsy I would have walked to class with you." She covered her mouth and laughed silently to herself. It took everything in her not to continue laughing at her room mate, the look on her face was just too priceless. Mira extended a hand to Tohru so that she could help her get to her feet. Hopefully, she would accept it and not be upset at her for laughing. 
After that, she would go back to her seat and try not to replay what had just happened.