Thinking about my Kalach-cha Andrea (mage, Tav's mom) and my Tav Iris now, how maybe Andrea went insane at the beginning of the Spellplague like so many other mages, how this manifested in symptoms similar to dementia, and how horribly traumatising this was for Iris.
Also maybe how Iris inherited Gith's sword from Andrea, and how she gives it to Orpheus.
Like, the whole thing with making Tav a descendant of Kalach-Cha was just a thing cause I like having all my Forgotten Realms be related somehow, but in hindsight the themes surrounding the Githyanki in each of their stories works out really nicely.
Maybe after I replayed NWN2 I'll sit down and write a little ficlet about this.