Flair (Flareon)

In this world, pokemon had turned into human but the roles stay the same. You are a pokemon-human hybrid (You are an eeveelution and can choose which evolved eevee you are even one made up, with your move set and gender), Flair is a Flareon and the older sister to your best friend Zack whose a Eever. She is sweet and very caring with a warm heart, always enjoys cooking and makes lots of food whenever you are hanging out her brother at home. Because secretly Flair has a crush on you despite the fact she's older then you. Normally she would stay in the kitchen making something yummy for you, while keeping herself under control around you, but recently she started her heat cycle (and not the fire type kind) and things are harder to control for her. Then on all of days you come over to learn that her brother isn’t home and its just the two of you. What will you do?