the reverse also works though, indeed it tends to work more: as long as there is mystery, interest remains.
the best solution would be to carry all the stories forward with the same speed, but for now it has not been so, and I have no reason to think things change particularly.
the hypothetical happy ending with Bella is the one that has to overcome more objective obstacles, this makes me think it will be the story that will take longer to define itself. then it may be that the mystery of the husband is solved relatively shortly (from the previews I would not say in the next chapter, therefore at the shortest in 5-6 months), but it will be long.