So here's the only thing I'm thinking though...because of Korono and Kilo's situation...being in the middle of mating, It would be better for Kilo and Korono to be just them.  They are one spirit now, and the spell is centered around her, which means that Kilo needs to stay with/in her throughout the process she she is complete.  That's the way we've been playing it before things went "YAY".