I know that there are only 15 chapters missing, and the story seems to go in a clear direction...but there was so much "change of hearts" in all of MC's life group (the husband + two out of three friends) that I wouldn't be surprised if everything that happened the last few chapters (Rio seemengly reading the social post, the photo of the mole behind the ear, ecc) is just to throw readers off and at the end turns out the real bad girl is the now supportive friend, and Rio has just problems with her husband but she's innocent.
Probability of this like 1%, but it's not zero
Probability of this like 1%, but it's not zero