The group of slingers has dropped off the south wall and have been harassing the blue-colored humans fighting with the elves. However, they have managed to kill a goodly number of hobgoblins (the Lord breaking his arm in the process). This has resulted in a few more hobgoblins, all they could spare, rushing forward from the wall - and even if this doesn't wipe out the elves, it will prove to keep this group busy for awhile.
Some evil has befallen the Ranger; she failed a save vs. Hold person, and is now struck immobile. Her hippogriff, 'Hathor', defends her body, but a hobgoblin champion (7th level) has moved in for the kill. Meanwhile, Pony has been reduced to 2/3rds of its hit points, beset by two cavewights, and although the glaivers are pushing through the wall they are finding themselves beaten down by the Prince, who is attacking twice a round now.
At the time the combat took place, the party did not know for certain that the 'Queen' on the map was the leader of the enemy.
The cavalry were actually uncertain at this point, deciding whether to charge the SE gate or turn around and go back to hit the N gate again. The N gate's increasing line of attack was encouraging them to turn around - but they needed to get a distance away before they could build for another charge.
At F., Garalzapan the mage and Widda the cleric are considering assaulting the East tower.