"Nashville" is definitely the best track on Whip-Smart, and the other two you highlighted are among the better ones. I'm partial to the closing "May Queen" too.
Everybody should like Christine McVie because she's great. "Say You Love Me" is my favorite on that album (it was a hit too), followed by "Blue Letter". But on the whole that album's not very good - I don't really like the Nicks numbers and the other McVie tunes aren't her best.