Well, I am not the best chick to ask, cause all it takes for Bill to get me horny is a porn video. And I usually have a glass of wine or two in me already.
If your wife isn't into porn, and not a big drinker, (bartender here talking), maybe
flavored vodka. It is all the rage now. Vanilla, Raspberry, Lemon, Lime, mixed with Sprite tastes like a fucking wine cooler from Bartles N' Jaymes.
Good luck.
Wait, just re-read your first post, try an Irish Car Bomb. Or convince her Goldschlager is a holiday tradition.