Yorkie, you don't have to let go. Keep the memories alive in your heart and mind. Think to yourself "What would Grandpa/Grandma have said or done?" Revisit "home", just don't live in the past.

That home and those people are your roots. By no means sever them! When you visit Grandma, tell her your feelings, your thoughts about days gone by but don't say "bye" to them.