Should I ask the girl that I like to Banquet? Update?

[Ghost]

I know I just asked a question like this before, but something is different this time.

Overview:
I'm a sophomore in high school and I like this girl who is a junior. I've known her from last year as a freshman because I was in her math class and we use to have assigned seats. Luckily I sat by her. Back then I didn't realize how pretty she was until this year came. I don't see her around as much nowadays because I don't have any classes with her. I only see her in the hallways. I think she likes me because a bunch of times when I worked on my math homework, I would turn my head and I would see her staring at me smiling. Now jumping to the present. Like 2 weeks ago, I had a dream about me asking her to banquet and all of a sudden she rejects me (in a kind way though). I was hopelessly confused.

Now:
Last night I had a dream about asking her to banquet and all of a sudden she said "yes". I just don't get it. First I had a dream about her rejecting me from banquet and now, I had a dream that she accepts my request? What does this mean? Is this telling me something? I know i'm afraid of rejection, but I just don't understand why I would have a dream about getting rejected, then about getting accepted. If I ask her to banquet, I basically have no way to tell her. I don't want to do it over facebook because it doesn't seem confident. I only see her once in a blue moon.
By the way, Banquet is in a week.