Unless her husband is very understanding of her unhappiness and would rather rest with them divorcing, there will be a case between the clans instead of the case between the two individual.
A case between clans is usually not going to go well especially if there was no good reason for a divorce. If both clan is very understanding of the two individual for falling out of love then, they will start with the lectures about building a life in hopes of keeping the two together.
If all fails, then most likely the husband's side of the family is going to want all the money that was given for the bride back because she's the one at fault for not wanting to stay in the marriage.