I think that the intended audience for the book is going to love it. It's a classic for YA readers--clumsy smart girl finds her self-confidence. I'll admit the part about traveling back to Regency England and finding it isn't the usual path.
While the blending of modern and classic may work for some, I found the teenage of now dragged me out of the story, rather than put me in, but this is going to work pretty well, and I'll admit that I would have snapped this up as a 13-year old.
If you're looking for an unconventional YA Regency romance, with a positive message, here's your book.