Lust or Love? Pris and Roy love each other... they defend each others lives, Roy mourns her death. A "pleasure model" should not be capable of love because that would make her a liability. Prostitutes are not supposed to be "lovers"...

If Pris loves Roy, then her function can no longer be performed, she must find a new one, a more humane (socially acceptble = human; without instinct) existance... a more human one.