@Q: Like I've asked some of the others, what do they feel is worth fighting for? What would drive them to taking a stand? In what instances WOULD they pick a faction? Is there some group that agitates them, causes hate and anger to simmer? What causes do they stand for?
They protect their own, family, people that they were born to.
What would drive them to take a stand is one of their own coming to harm by either faction, it doesn't matter if you are horde or alliance, you harm family, you die by family hands and I'm not talking about a small group, I'm talking about an entire noble house chasing you down and killing you on the spot without question.
Faction does not really come into play with any of them, simply because they don't believe that either of the leaders have it right, and would rather go their own way than tail behind either one. All three of them are strong independent females (Hurpderp, don't need no male!) and they prefer to stay that way. The only reason they are even tied to the Alliance is well..game mechanics. Not much of a choice there, really.
If some group stirs trouble, they tend to avoid them rather than confronting them. Anger and hate can brew quite a bit of negativity and none of them want to deal with it.
Kess stands for the Circle, and the Ring, as well as working closely with the Accord.
Imalaya sticks with the Circle, and doesn't much like the human leadership of the Alliance.
Q, well..she does her own thing. Her guild/family is all she really has, and protecting them is what she prefers to do with her life. If that means she lays her life down to ensure the life of a member of her family, then so be it.