I'm wondering how closely the manga is gonna follow the WN, it starts to speed up tremendously around this time, WN felt like it ended really abruptly.
this feels extremely ass pullish.. like the author intended on a much longer round about way of getting the magic to undo the slave mark, but he got a axe warning and decided to speed it up.
Lots of good theories going around, but I'm guessing shes from an entirely different faction, maybe even one of those 'ancient' high level people they keep talking about, seeing as she could probably see Haruto's true level, she wasn't that freaked out, but did seem uncomfortable with him.