I really hope they don't forgive the princess. Who cares that she's a great leader, or her reasoning for doing it? It doesn't change the fact that she enslaved you and 200 or so others, for her own benefit, cut you off from all your family and contacts (possibly forever), and proceeded to essentially publicly kill some of your peers to make examples of them.
And she does all this under the pretext that you're some sort of sub-human species!
At the very least, she should be treated as a slave for some time as well, though that is hardly justice - especially if they treat her kindly for a slave.