Even when crying Ciel tried his best not to be annoying or too loud, his tears were just slipping from his eyes silently yet it made everyone stop talking and look at him .
Lexie removed her hand from his shoulder and went to stand in front of him, she ignored everything that was going on between Isiah and Eijar.
She knew that he didn't want them to be with him, she found it justified given the circumstances however she didn't want him to go and act this rude in front of Ciel.
Ciel was just a little kid and he was taking him as a role model, and this way he was going to make him very sad .
Lexie knew that Ciel was not going to be satisfied with staying with her and that he was going to follow him no matter what, and that is why she had to fix the problem .
Because of all the beating she got from that mage even though her voice was too quiet, he strangled her neck and for that, her vocal cords got hurt too.