Tbh I never really understood why destroying her soul is considered some kind of rebellion agaisnt the tyrannical gods. It's a rebellion against the natural order of things, if anything. She says it herself that the Wheel existed well before the gods, it's not their creation, so not being a cog in the Wheel system =/= giving the gods middle finger. It's not even their system. Her soul being erased from existence is way more convinient for them (at least for those of them who are worried about the kith finding out their secret).
There's no way for Iovara out of Breith Eaman that doesn't involve her becoming a servant to one of the gods. Regardless of how much she knows about the god's secrets, she could only act on that knowledge to whatever degree her patron god would allow. So for her, it's either an eternity of imprisonment, or an eternity of servitude to a god she knows to be fabricated. Destroying her soul is the only way to grant her true peace. At least that's how I understood it.
Edited by Villentretenmerth, 15 March 2018 - 10:40 AM.