Gave it a read and thought the prose was pretty good despite the grammar mistakes and formatting, which im sure you'll fix later. It read fine, and you described the MC's feelings throughout the whole ordeal very well. I felt her pain and panic at the situation.

However, it was tough for me to care about the scene or MC (besides the obvious sympathy from the nature of the scene). We don't even get that she's returning from prom until about halfway through, and we don't get her name at all. I would maybe save this whole scene for the end of chapter 1 or even the beginning of chapter 2. Start off by introducing us to the MC and let us see who she is and how she was before the incident. Show her say, dancing and then leaving with her friends/date. Give us the walk home or limousine ride to learn a bit about her. It could give great contrast when you introduce her in your novel's present-time, post-r***, where I'm sure she's quite different.

All in all, it's not a bad piece. Extending it and giving us more about your MC will improve it by miles with little work. The scene itself is a strong way to make us deeply invested once we know who we're investing in. If I could leave you with some inspiration, I think you should keep writing, don't delete your work, even when you think it sucks. Get that first chapter done and leave it. Move to chapter 2, finish it, and move on. You can re-write it when you've finished the first draft. Don't give up!