Waking up next to her Erotic Audio Sex Stories

Additional tag: You had a gorgeous goth teacher in high school and you've continued to communicate since. However, you haven't heard from her in a few days, and when you fall asleep you hear an unusual noise. You awaken, chained up and see someone next to you, similarly chained to the floor. You can't believe it when you realize it's your old teacher. You hug and talk about your situation. You've been abducted by aliens and aren't able to leave. But then, one of the aliens comes in to your room, unlocks your chains, and hands you a note. You learn that you were captured because they need to reproduce and found that your teacher was ideal for bearing children, and chose you to be her breeder. You will not be allowed to leave until you successfully make a baby. You realize you have no other choice and fuck a baby into her from behind.