Your mother-in-law has nothing to do with your husband's dream.
I think what you need to do now is to reconcile family conflicts.
It's no big deal, threshold, the past is the door, the past is the threshold, your husband is in poor health, and the relationship between mother-in-law and daughter-in-law is not harmonious. These are all adjustable.
At least your husband and your daughter are safe now. This is happiness!
Take care!