So the MCs are from the past that later create the future generation. FL wanted to change the future and give her son the love he was deprived of in the OG novel. Now that she changed the pasts of all the characters and even had another daughter we are currently seeing the butterfly effect. Since FL changed the entire past we are now seeing the effects her changes have made on the original characters and now they’re going through the original story with a completely different backstory thus changing the original story completely. I think this is why the author decided to add the lives of the children. To show how much the original story was changed.
So the MCs are from the past that later create the future generation. FL wanted to change the future and give her son the love he was deprived of in the OG novel. Now that she changed the pasts of all the characters and even had another daughter we are currently seeing the butterfly effect. Since FL changed the entire past we are now seeing the effects her changes have made on the original characters and now they’re going through the original story with a completely different backstory thus changing the original story completely. I think this is why the author decided to add the lives of the children. To show how much the original story was changed.