all relationships are best if based on honesty- i would let her know (better she didn't find out later from someone else) that you need the quilts right away and have no interest in doing them yourself-so those 2 you are sending elsewhere.
i do not understand people who base their friendships on (business)
i am a long-armer and have many times recommended someone else when someone has brought me or called me about a quilt that i do not have time to do- or if i have a couple ahead of them i let them know- ...'i would not be able to get to your quilt until...but if you need it done before then - here, call.... or .... i give out other quilter's business cards- have always considered it a business where it is most benificial when everyone works together- i've received calls from people who have said to me---' i usually use....but she is going on vacation & told me to call you to see if you have time....' and other calls too---the (other quilter) knows i also give out her name- and has not qualms about sending me customers when she can not get one done.