The goddess of redemption, healing, and temperance.
She is symbolized by fire, the sun, and a phoenix.
We don't know much about her history, but we do know she once failed to save one of the sky cities from falling during the Calamity.
She is something akin to a patron deity for Zenith, at least through Lark.
Silestrea's appearance varies, but she is often shown in the form of a phoenix or a beautiful woman.
The only known worshipper of Sarenrae that we've met is Lark himself, though he claimed Reginald was a follower of hers. We later converted Zayzay into a follower of hers, as well.
Sarenrae appeared at a tavern in Lensfield to answer Lark's prayer, healing Tearson at least enough to keep him alive for a while longer. She couldn't do more than that, however, as she was putting a majority of her energy into protecting Pelor from an attempt to kill him.
When Tearson declined further, Lark prayed once more, almost taunting her. He felt a hand on his shoulder, but nothing more.
Corbyn later woke to a visit from Sarenrae in which she explained that Pelor's saving Corbyn from Damnriel was shortsighted but done out of love. She then revealed that one of the generals of Asmodeus was after Pelor, as Asmodeus and "someone else" were trying to kill him, though she wasn't sure who. She is primarily keeping him alive. She then instructed Corbyn to keep his faith alive as he was Pelor's chosen, and he could maybe even inspire faith in his allies. She then began to temporarily provide Corbyn with power in place of Pelor before asking Corbyn to take care of Lark, as he "throws tantrums but his motivations are pure.