Yes, it's really, really good!
What kind of upset/amused me is that I called that exact (mis)treatment of said character months before the movie came out, after reading a Joss quote talking about how great the relationship between these two characters was, I KNEW he was going to do it. Frustrating man.
And yes! I watched it twice before I knew who Alexis was in it. Then I was stoked! That man needs to be in more things.
Alyson posted this to her twitter and I about died: