you should finish it exactly as it is.
i could be wrong, but i think the colors in the quilt you are making will make a stunning - and well coordinated - focal point within the color scheme of her bedroom.
a few accent pillows to tie it all together might make a great gift for the next ocassion. :-)
you might also consider a pieced back for it made especially in her color scheme. just make sure to bind it with a color that suits both front and back.
who would not love two quilts in one?