[Her eyelids lower a bit, stopping the stare-down between them, but her expression shows no clear emotion - no disappointment in being lied to, in his trust not being great enough to confide in her, no guilt over having "falsely" accused him, no confirmation of whether she believes him or not. Instead, she gets up from the couch after a glance at the clock on the wall.]

I should go home. It got late; Historia will be waiting for me.

[Whether it's a punishment for his lie, a physical acknowledgement of the boundary he set, or a way to hide any embarrassment or discomfort with her own actions that she might be feeling - who knows? Maybe it's none of those things. Maybe she just doesn't understand why a merman who argued so tirelessly about everything being a give and take would want his humanity affirmed.

On her way to the door she briefly stops, albeit without turning back to him.]

I told you that I'll extend my unconditional support to Azul if he does arrive and finds himself in need of help. It's a shame that I couldn't alleviate your worries.