-Female MC doesn't just suddenly have a change of heart 5min after death. After her annulment, she was actually alienated and was badly mistreated to the point even her parents are really disappointed in her and ordered her to go to a Monastery to repent. During the time before she goes to the Monastery, she already reflecting on herself and wishes to become a better person and ask Saint for forgiveness after staying in the monastery. But her caravan was attacked by bandit, shocked to see her maid death she was unable to do anything and was stabbed to death
-So far from what I read, the culprit to the bandit attack was still unknown so it can be assume as an bad luck.
-After going back in time, FMC doesn't straight away go around being all good to her friends and peers etc. She was stuck in bed for a really long time because of her magic loss and was basically really weak to even move.
-Prince doesn't really straight away fall in love. He was only interested in her sudden change of personality at first (and the engagement help him to keep away other suitors). He is actually a prince that really works hard to improve the kingdom and put it as his first priority over private life.
-After many visit, then only the prince actually realize his feeling for FMC (But never said anything aside from just helping her moving around the house) Prince never really confessed or anything, the only difference is that know he really cares for FMC.