Just tell yourself "and they lived happily ever after, The End." From what you say here, you really, REALLY don't want to find out what happens to Mendoza (and especially her reaction to it) in the last book. Unless you need material for a rant on gender roles (though Baker's "The Rose Incomparable" (http://www.amazon.com/Wizards-Magical-Masters-Modern-Fantasy/dp/0425215180/) would serve as well for that, and it's a short story).
On race issue, there's good news in seeing that 2 of the 5 novels shortlisted for the Nebula (http://www.sfawardswatch.com/?p=627) are unabashedly non-white.
...Ouch. Damn. I was hoping that the ending, if not really happy, at least would do something about Mendoza's passivity.
And thanks for the news! I had been ignoring the Nebulas largely, and hadn't realized the list was up.