She built up and revolutionized Daites into something that can compete on far larger stages, and yet they treat her so poorly? If a large force of possibly enemy soldiers appear, then it's very reasonable to answer with full force.
The envoy left for the capital on bad terms and suddenly a large force of horseman show up in the direction of the capital, without any word ahead and enters the territory. And they treat her like she has snapped??
Maybe she snapped after multiple rapes and her life work and hobby being burnt and destroyed (BL).
And then all of a sudden she loves him?? Way to rush the romance in light speed that makes game of thrones season 8 jealous. God damn.