Throughout the day, assassins kept attacking them. Their target was always Arabella's carriage and not Ferdinand's so he was getting more and more irritated the more assassins came.
Ferdinand ended up apologizing to her repeatedly for making her the target of assassinations like these because she was his wife. He did promise her safety despite all these attempts.
Assassination attempts were only happening now because they were finally outside of Valeria's borders.
Their attackers probably thought they had more chances of surviving if they were outside Valeria's borders. They underestimated the strength of Valeria's Imperial Knights that Ferdinand had focused on strengthening since he was crowned.
Moreover, the knights would indeed not chase after them if they run away quickly since it would expose Arabella and Ferdinand to danger in case another group of assassins would come while the others knights were away.
