Her father wasn't expecting it. The news that the war had started had reached Seguer, but their men were still forming up. The first news the war had ended was a team Teleporting in, paralyzing everybody with powerful magic, announcing that Her Majesty Aspexia III was the new Queen of Cheliax, and executing her father on the spot. One of the women pointed, coldly, indifferently, like someone selecting melons at market, at three of his men - she knew their names, somehow - and they killed those too.
They let themselves into the fortress, then, and let the prisoners out of the dungeons, and asked Eulàlia where they'd find the tax records, school records, the treasury.
Eulàlia supervised the paperwork fairly closely. It was a good way to get her father's approval, to catch someone cooking the accounts. There was nothing to be gained by defying them. She took them into her father's office and gave them everything they would need. Records, maps, names of local officials, ongoing proceedings of various kinds. Only about half her mind was occupied by contemplating how she would die, once they were done. They asked if she was a wizard - yes - first circle? - no, second - and if any of the guards were hers, personally, and with numb lips she pointed those out. And if any of the secretarial staff were, and she pointed those out too. They asked if she renounced Asmodeus and pledged herself to the service of the new Queen, and of course she did, with all her heart. They notified her that she had their permission for the time being to rule Seguer, in accordance with the new law of Cheliax, and dropped a stack of decrees on her desk, and set off.
You'd think that after that nothing could scare you but it's the opposite, really. Every minute since then has been like watching her life flash before her eyes at its inevitable end.