Finally finished up after a shorter third session. She's been driving down several hours from Oregon, so I was really hoping to finish in two sessions but I couldn't quite do it. We just had the bottom fish to color, but with all the little air spaces between the lines and color it ended up taking two or more hours.
I'm very pleased with the results and it sounds like she is too. Also mentioned the potential for future projects and I'm game.
For this one she had a solid idea that was totally open to interpretation and sat like a rock (good recipe for success).