Either way works for me. I should go back and add a bit to Torn's biography. I will when I move her to the RG. At the monestary, she becomes devoted to Heironeous, and takes the path of a cleric. She gives her son up to the monestary to raise as they see fit, as she doesn't feel mothering is her place. She prefers to go back out into the world to do the will of her god, and undo some of the damage she's seen. As such, she could be out on some quest for the temple, perhaps directly related to the party's quest.
From an IC perspective, it would be better for her to meet the party fully equipped rather than as a prisoner. But being a prisoner is a good plot device. I feel I should leave that up to you Endur. Sometimes its cool if a new PC brings some new information to the table, making the existing party more prone to take her along. Either way, do you want to assign her any equipment? Or will you give me a GP amount to spend? I'm psyched to get started.