J.D.
I have 4 kids, and only 1 of them does year round sports. I have 1 in Hockey year round, and the other 2 boys play T-Ball/Baseball in the spring. My youngest is too young for anything right now. Spring is INSANELY busy for us, and I love it! I think Grandma needs to just get over it, and support your daughter in her activities....
Yes, family is important, but if she wants to see your daughter so bad, she should go and see her doing the things she loves!! I'm sure your daughter would LOVE to have Grandma there to support her!