There is too much expediency to it.... as if they wanted to make room for more characters to come , a lot more!.... and did not want to carry Roxanne McKee's contract any more.
As other have noted Dany set her up... And no I don't buy that she would betray Dany ... silly plot narrative.
Now Roxanne McKee had been on another TV show , stage play, that had wanted her back, which she had turned down ... tho I don't think absolutely , so I don't know maybe she asked D and D for an out.
It's a small thing and I know in the books her character is not even there, still, in the novels to the end of ADWD those three Dorthraki hand maidens and three blood riders were still in her inner circle and provided a kind of spiritual continuity with her evolution by way of Drogo and the khalasar which was a nice touch by George. Hate to see it gone.
(For a two season character, have not heard a new peep out of Roxanne McKee since the end of the season, she might come back!)
Edited by boojam, 15 June 2012 - 09:04 AM.