It is only a matter of time before the Dark Iron dwarves rebel against the Alliance, with or without the support of Moira. Their ambition is legendary and has no boundaries, the fact that it their regent queen is a Bronzebeard will not stop them: they want to subject all dwarves under their command and they will not hesitate to kill those who get in the way.
And the Alliance will not repeat the same mistake: will punish the Dark Iron wherever they go, they have never been welcome in the lands of the Alliance and no Dark Iron dwarf will live.
Moira is free to decide who to support, if to the Bronzebeard or to the Thaurissan... that in case she survives.
The only hope to prevail for the Dark Iron is the Horde. And they will do anything to get their support.