I agree. You're work is technically really good, but it does look like it's made for classes. Also I think you should expieriment more with more subtle symbolism. Women seeing themselves as being too fat doesn't necessarily have to translate into an image of a skinny girl seeing a fat girl in the mirror. Maybe you should get some books on women's issues, anything by Jessica Valenti or Jennifer Baumbgardner (sp?). They might spark some inspiration.
Working from photographs can also hurt you, as some people view it as cutting corners. If you can't afford models, maybe it would help if you work with a combination of real life and photographs, or work from several photographs instead of just copying one. I remember my UG painting instructor (and advisor) occasionally used pictures, but he would basically use them as a reference to make sure things were scaled correctly, and then he would put the picture up so that he didn't feel the need to try and make his painting look exactly like the photograph.
Right now, I'm working with a lot of antique toys, and I try to buy as many as I can, but sometimes I find the perfect toy on Ebay, but it's $400, so when that is the case, I just steal images of it. But even then I try not to copy it verbatim. I just use the image as a guide.
Even if you don't get in this year, I wouldn't worry. Taking 2 years off was hands down the best thing I've done for my art. I think for my grad school portfolio, I only used 1 or 2 paintings from undergrad, and both were from independent study classes. My work is so so so much better than it was when I was a senior in college.
Good luck, and I hope that helps! You've got a lot of balls to post this thread, so props to you! I don't know if I could do it.