At the costume ball, she had asked for help. She doesn't understand how to be human. [And, as much as he was angry with her right now, Tieria could deeply sympathize with that fish out of water feeling she was most likely experiencing. As for losing her twin, Tieria wouldn't have normally considered trying to sympathize with that, but... He'd gotten used to Regene. It had been a little disappointing to lose him here.]
Not that I'm saying that's an excuse... but I will not help her in learning if she's going to keep attacking my teammates.