It just seems incredibly stupid. I mean even if you were a doper - would you be doping a month after you won Olympic gold?
Yes. You don't just stop for a number of reasons. One of which is the bio-passport and steroid passport would both have radical changes to the profiles.
Not that the IAAF would sanction anyone that recently won an Olympic medal for an abnormal profile.
I guess she didn't have enough money to bribe the federation to make the positive go away.