I've googled away with no luck. Have also talked to a quilt shop owner whose daughter plays high school softball and he knew of no softball fabric. There's one that's more gloves than balls, but the colors are wrong. I may end up getting baseball - she'll understand. (Difference is the balls have no visible stitching.)
Hadn't thought about embroidery. I have very basic skills in that, but am a fan of applique - I might could do that .... thanks for the idea!