Originally Posted by
Draeth
Imagine that, she didn't want to let the Horde, who just betrayed them again and left them to the slaughter on the Broken Shore from her POV (remember, the Alliance has no idea what happened on that cliff, all they saw is the Horde ditch them) leading to the death of her friend and king, back into the city under her rule.
Also, the Kirin Tor was an Alliance faction, not a neutral one. Its "neutrality" was a gameplay convenience for Wrath of the Lich King's shitty use of Dalaran as a plot device.