Admittedly, she started out as a bit of a sona. So, not exactly a whole lot of inspiration in regards to her, to be honest. Even now as she's been branching off into her own entity, there's still remnants of her not wholly separate from the aspect sona-hood that sort of prevents the concept of inspiration from really taking route.

Other characters I have have much grander meta backstories & inspirations, but not really for Iliira. T^T