Lovely. We should all have a friend like Chimamanda Ngozi Adichie to write us letters and cheer us on in whatever endeavors we want to do. If you've thought at all about feminism, class, race, gender bias, you'll have thought many of these things already, but I bet you wouldn't put them so tenderly and with as much love. (Or maybe you would, in which case, you should -- we need more books like this for everyone!)
A really great gift idea for anyone with girls or girls themselves.