Actually, Grandma was one of the first I heard about where the Chinese stole the business. When Peter's Tex Mex opened, one of the magazines did a story on Peter's, and it shared how Grandma from Grandma's Kitchen had helped Peter open the resturant after being forced out of Grandmas. She said it was due to "unenforceable contracts in China."
I agree that after Grandma was forced out, Grandma's Kitchen started the slow decline.