Calling off the wedding will not even help to resolve the issues and the shame that the man has brought to himself and that of their families but I believe that the woman should still give him some benefit of doubt since the man could not appreciate the assistance that she rendered to him by supporting him in their wedding. Right now I think the best thing to do is to take the man to rehab after the wedding because it is only an addictive gambling that can do what the man has done.
Indeed, using savings for gambling is certainly not good, it is also true that what you said canceling the marriage is not the solution nor will it solve the problems that occur. There is no problem in my opinion that the woman wants to withdraw her help because her intention to help was not for that but to make it easier for the man, only I the man cannot appreciate the help that has been given. It is natural for me to think that this woman is angry or upset.
If indeed the woman is patient enough to still be able to forgive and accept the man's return, maybe the choice that must be taken is to take the man to rehabilitation to be able to treat the problem, because in my opinion those who use savings for gambling are too far gone.
Viewed from any point of view, this action cannot be justified and it is wrong to spend your savings on gambling. This is what we should pay attention to, both for those who are married and for those who are not yet married, how we can find a life partner who can be responsible. The reason is that spending your savings is a sign of someone who is irresponsible, especially if you spend the money on gambling.
In my opinion, the woman is legal and has the right to cancel the marriage, because this is something big, even though it is true that this does not completely solve the problem. However, if a woman can accept her man again, then she must ensure that he will not repeat the same mistake. The thing is, you need to remember that building a household is for life, so you have to take a lot of consideration, especially if at the start both women and men show an irresponsible attitude like that. Don't let the same thing happen again when they are truly married.
This is a concern or lesson for everyone, whether women or men and for those who are married or unmarried.