Spoilers for story, different interpretation:
Quite loved it yet I believe that MC will be caught by the end of it nevertheless and will even receive worse sentence. The cupboard would be stained of blood, fireplace would have fabric of our clothes and wooden flooring will reveal that there was some blood in it which was cleaned before the murder actually happened (and sink if there were blood traces). Then the gossip women would be put on stand who would tell that MC is the one who told the rumor to them upon questioning, who will then be the prime suspect. Hair particles and other things may trace it back to MC and she would be in jail for double the time.For me, that is truly the saddest part - that the MC would truly never escape this hell and everyone will be even more attached to the bride that they’ll support the bride even if she becomes an obvious killer in the future.