Wow, what a lucky coincidence that was. And what a great advertisement... become a dareslut and you just mind find an unexpected and like-minded partner.
Now let's take advantage of the situation. :P
You need to follow through on your Community marathon. You can do so at either house you prefer, but hers might be better. Arrange a day, ideally before you get those heels off (I'm loving that dare, btw, such a sexy reminder and potentially embarrassing predicament) and let her know that you plan to be kinky around her / with her and make sure she's into it.
The whole time you are together, you need to be naked except for heels and a thong. Bring some hair clips, your buttplug, a vibrator, and if you have/can make one, a nipple clamp chain - clothespins and string can work, too. Before every episode, roll a die and attach/use that many of the accessories to your body until the end of the episode, ask Reagan where you should put each one.
You are effectively her slave until the marathon is over, since you've seen it and she hasn't. It's your job to fetch drinks and snacks, to make sure she's comfortable -- giving her a massage or foot rub if she asks -- to entertain her sexually even. Make it clear your body is hers to enjoy, if she wants to; she can tease you, fondle you, watch you masturbate or go down on her, spank you for any mistakes, etc.
Finally, you need her permission to cum.
Hopefully this fits into your/her parameters. Have fun!