Rk is correct about the 2-3 weeks BUT... Greta doesn't work here anymore, quit about 2 months ago.
In this case, no news is good news. Rejection letters are out within 3-5 days usually.
SG is VERY snowed under with work - she's having to do a lot of Greta's work until they replace her and SG doesn't only do pilot interviews, but also some on the mx side, CSA supervisors, etc. EXTREMELY busy lady...
If you get past the 30 day mark, you might try to call SG and leave a nice message about having enjoyed the interview, looking forward to the career, blah blah, and just ASK what the status is. I've known several people who did that and were called back within 24-48 hours and offered class dates. Maybe coincidence, maybe not, but I would NOT do that before 30 days are up.
Try to be patient, and good luck to you.