Monster System...a Skill called Assimilation...and a section titled Assimilated Skills, with abilities that very clearly sound like powers possessed by Monsters.
Specifically, the bat Monsters, and of course, Harpies.
I'd be willing to bet good money that her first two raids consisted of Dungeons with those Monsters.
And that Unlock Progress thing, I'm guessing she has to consume or absorb a certain number of Monsters to unlock those abilities.
I get why she's hanging back and trying to stay out of my line of sight...she's doing exactly what I did, keeping her powers under wraps.
She must have used Appraisal on me...in which case, she would've seen that I've got a System, and the Appraisal Skill, too.
I think she's realized that I've caught on though, she isn't hiding anymore, and has a slight grimace on her face.
