Sorry, but I don't see it that way at all. Taylor's Laura is the best her voice has been written in a LONG time, and strikes a good balance between her more reserved and formal depictions while being more open and comfortable with people. Bendis CLAIMED he was writing a character who has been changing and evolving with her experiences. Taylor is actually DEMONSTRATING it.
And I sure as HELL didn't read ANYTHING in Taylor's book that sounded even the least bit "Valley Girl."