Yeah, all that the email had said was to give them 2-3 weeks of processing to finalize the interview schedule. But I'm unsure if that meant 2-3 weeks after that email was sent, or 2-3 weeks after the RSVP deadline of Jan 3rd.. I have a feeling they're not going to send specific time slots to individual interviewees until a week before interview day.
You should definitely email Ashley Hart about your Fall 2015 grades! I had a weird situation with my Fall 2015 grades, and she was able to work with me. She was very quick to respond via email. Good luck!