If you would like to applique the letters here is a link that may help.
http://www.ehow.com/way_5402953_inst...e-letters.html Also there is several places you can do the letters in the block, just do a google on quilt block alphabet.
The quickest way would be to embroider.... lots of people here would help with that if you didn't have access to an embroidery machine. Or you could do it by hand.... lots of options..
Lucky girl!