Offer her a drink.

You arrive home, very hot n bothered for what you have planed. Now that you were Home, your Youngest, Cassy was gathering her things so she could go to her friends house, your oldest Samantha was in a study group. As Janice started to gather her things you thank her for all the heard work and offer her a fruit smoothy as the heat of the day still lingered. What she didn't know was that the smoothy was very alcoholic but sweet and smooth. Easily hiding the taste of booz. The shy girl smiles, blushing as she pulls a stray bang out of the way.

"T thank you. I'd love that actually."