Your girlfriend and your roommate, keep asking you questions, while your maid side answers them all, in the end they conclude and think that you really are a girl who does this for money, who has no family or house in common, so they wish that you have an age in which you can improve your life and they can help, and suddenly the lamp shines.
When you see again, the room is bigger, or rather you are smaller, you look in the mirror and scream when you see that you are a little catgirl, your ex-girlfriend stands behind and tells you to calm down, that so they will help you be a big girl again with a better life.
You somewhat calm, with a sad voice you explain what happened, they are amazed to hear everything, they apologize and say they did it in good faith, you understand them, seeing your new body
Some time later, they take care of you, still live in your room, your ex-girlfriend started dating your roommate, in order to legally adopt you, you go back to school, which is easier, since you keep your memories, and with more free time you discover that you have a nice and good voice, maybe in the future you will be a recognized singer