So if Inversion made the melting sword heal her instead, then that suggests that her specialty is turning any spells or abilities directed in her direction into it's opposite. I mean, that's the literal point of "inversion" but it doesn't seems to invert everything, such as a physical beating, and I hope it doesn't invert a healing spell cause that would do harm rather than good. This all means it's limited to enchantments, such as blessed or cursed items, and most likely spells. Granted, we haven't yet seen what a spell or skill does if directed towards her, so for all we know if she gets hit by a fireball it'll incinerate her just the same. If not, then it may turn into water upon contact with her person, maybe even water that heals or soothes since the purpose of said fireball is to harm and burn away flesh. I'm really looking forward to seeing what happens regarding this "Inversion" attribute.