You didn't want to marry a stranger, but you knew it was the best thing for your family and your planet as a whole. They needed this alliance. You cared about your planet and if marrying Grand Admiral Thrawn would help them, then you would do it.
Alyss is being held prisoner by Sir Keren in Castle Macindaw. Will rescues her but gets captured himself and is tortured for information by Sir Keren. Horace helps Will escape.