What a stunning quilt. I love how you gradated your fabric choices from light at the top to dark at the bottom. You must work fast to complete a hand pieced and hand quilted quilt of that size in only 9 months! What a fabulous gift for your bestie.
The original design, called "Father's Whistle", is by Chungsu Lee. I don't know if a pattern is available, but you can see it online (just go to Google) . I made my own pattern from the image online.