I remember Dayna, she was, psychologically, a monster, but my undesirable cared about her anyway (he was also sort of a monster, in a different sense) and never spoke of her secret purpose. I was too newb to understand my Tuluki breed PROBABLY should not be making friends with gemmers, but his backstory was ugly enough to allow for it, as his cultural education involved being locked in a closet his whole life and beaten with a wooden axe when his caretaker would get sauced, until he managed to escape and ran away from home. Truth be told OOCly I'd guild sniffed her and had a feeling she was a mage, but ICly I knew my PC would know nothing of the sort so went with it until the manifestation.
All the gemmers that PC knew, a total of two, he met in the T'zai Byn. Also, that particular manifestation was a pretty epic oh shit moment.