I was wrong about the recruiter. She wrote me back and was very nice. She said that the position she had in mind required someone who had been in charge of product marketing… I asked her about graduate school and she said an MBA never hurts your career prospects.
Being a recruiter means being nice to everyone, because everyone knows someone who might be a customer. The commission might not be as good for me as for an executive, but then again, I might send an executive candidate her way…