Personally, I don't take on these kinds of projects. I don't want to make my hobby work, be pressured for a deadline or forced to sew on fabrics I don't like. That is just me. If I make a quilt to give away (and I do give away most of mine), it is done with a pattern I pick out, fabrics I have chosen, and worked on when I wanted to. When finished, it is given away. I would just say politely that I don't take on projects like this because.....blah, blah, blah. and let it be that. If you can recommend someone who might want the job, do that. Or refer her to the local quilt guild for help.