You don't like it, but cooperating is probably the only way you'll have a chance of getting back to normal. Or at least human again. With a sigh, you lean against your own tail, watching Marisa pack her stuff up and talk on her cell phone with someone. The sound of her footsteps makes it impossible to hear what she's saying, so you just follow her with your eyes, gaze lazy but never losing track of her. After a few minutes, though, you get bored, closing your eyes and thinking about how you could've been spending the night complaining about you not being able to find a job to your girlfriend.
You look up again when you hear the footsteps get closer. Marisa freezes as soon as you lock your eyes on her. "I, uh... I managed to get in touch with my friend..." You saw she was holding something behind her back, but couldn't tell what. "Said he would be on the next flight he could get." You nod weakly, not really in the mood to talk. She frowns, swallowing hard before walking the rest of the way to you. As she gets within immediate striking distance, she walks a little slower. You're beginning to understand why she smells so afraid. This close, you can see that you would be nearly twice her size if you had human legs. With your tail, you must seem like a monster. You don't really feel sorry for her though, not after what's happened to you. You briefly wonder if her fear tastes as good as it smells, but dismiss the thought. You've already decided to let her help you. "Will you be alright here, alone? I know snakes don't like the cold much. I've got the heater cranked up, but without a sunlamp..." She put her hand on your tail, feeling the scales with a terrified curiosity. You turn away, but don't shy away from her touch. Even if it's not much, the warmth of her flesh is still nice. "Anyways, at least you'll probably sleep okay. I suggest you get it, too. We want you in prime condition for tomorrow."
She hurries back to the door way and you glance at her. "Just don't expect me to be any happier about this tomorrow," you hiss. "This is still your fault, no matter how much you do to fix it. If I end up stuck this way..." You bare your fangs one last time, smirking at the squeak Marisa makes. She nods fearfully before closing the door and darting away. Left in the dark and cold, you curl up around Marisa's desk, cracking one of the legs as you get comfortable. Before you even realize it, you're asleep against your own coils.
"Alright, David, time to get up." Marisa's voice is the first thing in your awareness, vibrating through your whole body as you struggle to open your eyes. You've never felt so tired before in your whole life. When you finally get your eyes open, you see...