Legal Question in Civil Litigation in Pennsylvania

In my opinion (and its just an opinion)is that your fiances; wife would not win a lawsuit because the wedding was called off. An engagement to get married is not a legal contract and either party or both may decide after time, that marriage is not right for them. I think it is in the interest of the state and justice not to force people to go through with a marriage, simply because they were engaged. Obviously, you shouldn't be punished for calling of a relationship that would lead to a bad marriage.

When your finace's mother began to make wedding plans, she was taking a chance that the marriage would never occur I do not believe that you have a legal obligation to reimburse your mother-in-law-not-to-be for expenditures made for the wedding, unless you agreed beforehand to contribute to the cost of the weding.

It is not for me to say whether you have any moral obligation to pay her some money, as that would depend on the circumstances of the separation, your own ethical beliefs and yuor own financial situation.