I totally get your reaction to how much the quilt ended up costing and then having to tell your friend of this amount. It has nothing to do with your shopping abilities (which seems pretty good!) or your gifts or talents (which are not in question at all!) or even your right to being fairly compensated (you most certainly are!!). It just has to do with something ending up costing far more than the client may have anticipated and then having to convey this to a good friend. Oh yeah, I get that!!
BUT . . . in the end, your friend did seem to understand and even feel appreciative of your talents and efforts and the value of these items. I would keep that in mind and relax now and just use the advice of others here to, in the future, either let the client buy the fabric and give it to you or better yet, take the client with you when shopping for fabric next time (my favorite since you never know what they will come back with if they go on their own! lol). Then discuss your labor fees.
I too can't wait to see this quilt - it sounds stunning!