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Since the Tao is like Duct Tape and holds the Omniverse together in balance, it has a light side and a dark side. The Guardian Angel Branch has to be balanced out by the Demon Temptation Division who's goal is to test the focus of peoples evolution by tempting them with substitute gratifications for wholeness and sacrifices to holding onto the ego.
Belle was one agent of the division that already tried to tempt Chris but he was strong to recognize the limits of those gratifications. I figure that Blake Collins isn't and he'd already succumb to Belle's offer.
When Chris also isn't satisfied with the gal that Minerva picks for him because she isn't a close enough resonance match for him, he'll try to do something heroic to get into Elysium to find her and set out to reform the corruption with the defense contracts at Lockheed.
That will give Blake the motivation to ask Belle for Chris to be taken out and tie up the loose ends of the characters with giving them more to do in the developement of the plot.