Yeah, but what I am wondering is does Mab even know that Harry retrieved the Spear, etc.?
Or she does know in her usual four dimensional chess way, saying eventually when Harry does
bring them out, that that was her plan all along?
That's an interesting question. I wonder who knows and who doesn't.
Uriel can be pretty safely assumed to know where his side's artifact's are.
Mab would have been hoping for her Knight to become that much more dangerous out of the venture, but it's an open question whether she's sure he got the other four.
Vadderung was only on the periphery of this one, but knowing is kind of a default assumption for him.
Marcone? He still seems to be expecting to eventually come into direct conflict with Harry. I'm not sure he'd have been as willing to go along with the plan if he was clued in that getting the Spear into Harry's hands was one of Mab's angles. Plus, if he knew Harry had come out with the true Shroud, he'd probably have swallowed his pride and asked to try it on Helen Beckit's daughter where the fake failed.