Theo had noticed the prior term that Granger never sat with nor did she interact with the other Gryffindor girls in her year. It seemed, to Theo at least, that while she was liked enough, Granger was more often than not the target of her own housemates" bullying. It made Theo's heart ache for the witch, because once he'd gotten to know her, he saw how easily that tough exterior of hers actually did crack.