Is this considered defaulting on an auction? A final bid was made, and they haven't accepted payment nor delivered their promise.
You could say, well she never took the BTC so no, but its like if I bid 10 BTC on something on Bitmit, or the auction section of the forums, and I won, isn't that a contract that I have to buy said 10BTC item?
Totally, I offered her 0.2 BTC for not taking my religion and until now I have no option to stand to my part of the deal.
That calls for a scammer tag!