Narcissa was in the Three Broomsticks, sipping on the white wine that she had bribed the bartender to look the other way about. The last owner of the Three Broomsticks goes to jail for trafficking illegal potion ingredients, and now the new owner is leery about you bringing in your own wine. Smooth, Cissy. At least they don't know it's alcohol-free, so you can keep up your charade.