I think showing him the depth of her conviction through her own giving is part of that example.

Randy Alcorn loves giving, and he wants you to love giving. Just listen to him talk about giving, about joyful tithing and radical generosity. But fear not—Alcorn won’t guilt you into giving. Nor will he instruct you to sell your possessions, abandon all forms of entertainment or forego future vacations.

We’ll each part with our money. The only question is when.

Some of these are one-a-day question; others could be asked several in succession. Decide according to your preference. 

You can give joyfully if you're seeking true treasure.

Being under grace does not mean living by lower standards than the law.

When it comes to financial stewardship, God hasn’t handed each of us a standardized checklist with little boxes to mark off one by one. Rather, He has provided us His Word with principles for effective financial stewardship—principles we have to wrestle with. In the process of this struggle, God expects us to seek His face and to pursue the counsel of godly believers who have traveled further than we along Stewardship Road.

I have mixed feelings on tithing. I detest legalism. I certainly don’t want to pour new wine into old wineskins, imposing superseded first covenant restrictions on Christians. However, the fact is that every New Testament example of giving goes beyond the tithe.

I have encouraged women in this situation to go to their husbands, explain their deep conviction about giving, perhaps share one of the passages about how God blesses givers, and tell him she believes God will provide for their family so that the amount she desires to give won't be noticed by him, even if it is substantial.