has anyone got denied after asking for letter of rec? I'm feeling a little nervous now because I emailed a professor a week ago and still haven't gotten a reply. I've had several classes with her (got A and A-'s) as well as working on a project with her outside of class, so I'm little taken aback for not getting a response...yet. When and how should I follow up with her, in a way that is polite and not pushy? (I graduated so I'm not in Berkeley to see her in person.) Is the lack of response typically means a no-no ?