Hi,
I know too well what it is to have grandchildren far away. My son and his family just came back from Germany last July, and are now in Texas. I have not seen the 3 boys in 5 years. Talk to them alot and discuss recipes. 3 other of my grandchildren are more then 3 hours away. I see them about 3 times a year. But I am blessed, 3 of my granddaughters are in the same town and I see them often.
Even if you cannot share the kitchen with your granddaughter, talk recipes with her. As a surprise send her here and then a new kitchen ustensil. It works for me. Best of luck.