Andraste - from Prophet to Party Member in DA4?

Not Andraste as an OGB but she could have been reborn based off Avvar and Alamarri beliefs. Note my ideas about Calpernia in the Crazy Theory section. There are hints in her short story she may be more than she seemed at the time. Even the short story says nothing of her parents. She apparently does not remember them and had been a slave since early childhood. She has immense untapped magical potential and there are hints in the writing she could be a Dreamer. She wanted to improve the status of slaves in the Imperium. Whilst I don't think Corypheus was ever her lover, he was her mentor whom she trusted and then discovered his intended betrayal. That was over the Well of Sorrows. In the Chant of Light Maferath was said to have betrayed her when he suggested she go to consult with a magical silver pool where the Voice of Heaven could be heard most clearly that was located in the hills near Minrathous (of course other stories suggest the capture was much further south in her stronghold there).

I've also mentioned how instead of being Andraste reborn, our companion could be one of her descendants, who were always female, which could also point to Calpernia being one of them.  Incidentally, that isn't her true name, just the name she took for herself after being freed by Corypheus.  That would also allow for really being from an ancient lineage since Andraste's daughter Viviel married a Tevinter mage and had several children by him.