When she had promised not to damage the city, she had no intention of not damaging the palace where the stuck up queen was. She… just didn't expect her companions to be so freaked out when the guards had told them Chrysalis was no longer present. Crimson had insisted, but the guards had told her to go do something mildly unpleasant. Crimson took exception to this and questioned the offending guards’ masculinity in a most impolite manner. The guards proceeded to get violent, and then the stairway up to the palace's main entrance just sort of exploded, all two hundred steps of it.