The count gets arrested for his purchase of illegal weapons, I thought he was fighting on some battlefields through the years but it seems that aside the war around the FMC mother death the world was at peace, and in his deranged mind he decided to stay in war and spent a good chunk of funds and reward money on wargames, got a separated villa/castle that didn't had memories of this first wife and the second one that was only good at opening her legs.
The Step-bitch gets arrested too, even she bought illegal stuff for her insane spending trips.
Step-sis-bitch is involved in a carriage incident for crazy dogs on the road too, she gets permanent scars on half her body and face, the prince after seeing her all bandaged and wounded loses all his "love", she will become a nun as her family have nothing and she herself lost any "value", scarred body, bad rumors, no noble etiquette, stupid.
The crown prince goes half crazy for the stress, he have to repay a massive debt, loses face in the noble community for his stupid actions and then loses all the fake love he had for the opportunist bitch, a maid enters his room and in a deranged state he pushes her to the ground, he realizes what happened after other servants stop him, vomits a week of food and then faints, when he wakes up the king remove the crown prince status and demote him to a count, that will have to pay back the debt from the frontier and is exiled from the capital.
Him and FMC sister regret their behaviour towards her, not simply a bad regret of "shouldn't have done this", really regret treating her badly.
The merchant got karmic punishment too, he didn't hurt the FMC but had lost his gratitude towards her after his merchant shop got saved from her intervention, he redeems himself by denouncing to the authorities the people traffiking the special cloth, that was developed in a neighbor country and forbidden to be sold outside, for helping the authorities and denouncing himself he didn't got punished but only fined, but it was huge fines and we could say he have to restart anew, but with a clean conscience, he wanted to give the last of the money to the family but was told not to as it had fell and to give it to charity instead.
A big surprise was that the dog incidents, the traffiking of the cloth, luxury goods and weapons were all from the same group, people under the emperess of the masked prince nation, it was all to saboutage countries with internal strife, they did even more damage than what we have seen.
And to end it...yes, FMC lived, she was visiting a horphanage and the stress of everything in her life and the engagement cancellation finally made her got a fever, she stayed days in bed unconscious, the incident was organized from the trafficant group because she was too smart and was going against their action in bringing douwn one of the biggest merchants.
The dead body was a maid that step-bitch put on her like a hound dog, and step-bitch likely forgot, thinking she died too in the incident, the maid was corrupted and wanted to visit a noble meeting when camouflaged like the FMC, to do noble things and bring down her name, she hated how from her point of view the FMC had everything when she was born a commoner, anyway the dogs made a incident happen and she died with her face smashed from the debris and noble clothes on the family carriage, the steward was gravely injured too and couldn't tell what happened.
i think that given how much stuff happend a month would have been more credible, but the FMC never planned for the fall of her family, she was the supporting pillar and that was the natural consequence, if the time was longer she would have recovered and put things straight.
