As far as points earned, you can consolidate them into your wife's account, as you can transfer points between family members that live at the same address.

But, you may want to consolidate elite stay/night credits, if you think you have a shot at making Platinum. In that case, if you always stay together, it's probably best to credit all stays to her account if you want Gold benefits, but you lose the stay/night credits you get from your SPG card.