All of us know that Bryce was not a good guy, and everyone was aware of the things he did, including Hannah. Even if she was new to Liberty High, she was informed about the things Bryce had done and was involved in, still she went to his house and to tub. When everyone had left the hot tub why couldn't she leave the hot tub with everyone else? Or she could have left the hot tub when Bryce entered the tub. Why didn't she leave then and there??