She lost quite a few of her closest friends over the course of the season, but in the place of her slain bloodriders and handmaidens, the Mother of Dragons has as much gold as her Dothraki can carry, as well as a trio of dragons who are more than capable of burning people to a crisp. Still, while she may now be able to buy a ship, it's still a hell of a long voyage back to Westeros, and there's no guarantee she's got the forces necessary to do much if and when she arrives.