@Dnii ermmmm simple human compassion ain't deep why would she not? They are the first people she met in this world and the fact there was slavers after them, in particular suggesting horrific things to elves, no wonder why she cares. It's called sympathy.
She ain't a blank slate dude, she's trapped in this new and very dangerous world where she fears even her own faction will possibly devour or kill her if she doesn't become their queen. what more she wants to understand more about this world (she's somewhat familiar with it but as she talked with the elves even they never heard of her faction and that implication alone implies there's more to this than meets the eye) and she sure as hell doesn't want it from the Slavers. And she only knows the Elves thus far.