My wife is a Medical Doctor ... and while I am an Engineer, I have been a stay-at-home Dad...
Maybe a better question for this LDS (Mormon member) would be ... does the Mormon Religion oblige a Husband to stand by his Wife?
In any case, the answer is that we are obliged to stand by God and do his will. We are also to support our respective spouses in righteousness and righteous endeavors.
I suspect that if this woman had told church authroities that she either approved or allowed the molestation of thier daughter, she would be excommunicated.
What about if, after the fact, she found out about it, and then declined to report her husband to police?
Under LDS doctrine, would that be a punishable offense?