I do not believe the way to have a strong society is to have lax social mores.
There were reasons traditional values evolved.
You cannot have a strong society and not respect those values.
I don't see this remarriage as a loss of values at all. There is no moral code being breached here. These are strangers, and you do not know their hearts... The judgment and assumptions YOU are willing to make about their integrity is beyond unfair.
Again, I don't see that she did anything wrong, except not follow arbitrary legalistic rules. People are different. For some people, 6 months is enough time. For others, 6 years is not long enough.