Styx plucked her drink away from Zelos, after rolling her eyes about the woman who had openly groped him. He liked it and she wasn't even going to pretend she didn't know that. She knew her son, she knew what he was like, there was no point in lying to herself about it. But, since she wanted to be sure that the quality of the alcohol provided was as top shelf was he insisted, she immediately sampled the provided Manhattan to be sure she was not disappointed.
She was not. Nor was she disappointed with the return of Kratos, who she was certain would have been back as he had said he would anyway. "Don't be daft," she chided to Zelos. "Your brother said he would return and he did. Did you get him the drink he asked you to?" At which point, Styx raised her eyebrow, "or were too you distracted by the drive-by groper to remember?"
By that point, she had noticed out of the corner of her eye that Kratos was not alone so as much as she was teasing Zelos and normally would have kept her expression mute for maximum effect, there was no way to contain the smile that slowly formed. Styx turned her head to properly welcome her son back, and get a look at whoever was with him, but it wasn't like this was a common occurrence. Not making him, or this woman, uncomfortable -and not letting Zelos do it either, was now paramount. Because that was not how one held onto someone that was just a friend.
Quick analysis based on the extremely limited information she had, Styx had suspicions. She hoped she was right, but even if she wasn't... she was still pleased.