For Christmas, I made quilts for my mom, dad, and in laws. My sister told meshe hopes to get one next year! I definitely wasn't offended, I found it flattering. If I didn't make her one, she also wouldn't nag, and we are extremely close so I know it is a bit different.
i would recommend just being honest. Prior to learning to sew and quilt, I had no clue how much time, money, and love goes into each quilt. Also unless you have done it, even hearing it all doesn't quite sink in!