I think that was in response to my theory that it would be a Rhalgr corrupted and summoned as the Anima we're familiar with from FFX. Don't see why, with the different backstory, there can't be a genderswap though.
The only other god I recall being full of pain and longing also had Chains, and iirc turned into Shinryu too. But it's not like *that* story would repeat. Right?