Tucker had the same problem when he joined our family a year and a half ago. Hannah stuck her nose in the air and ignored his attempts for fun. I was her playmate and that was that. Over that year and a half however, I have watched their relationship develop. Gradually she is getting drawn into some interaction, and that is just recently. You'd think by now anything that was going to happened would have happened, but it seems the relationship just keeps getting better and includes episodes of play. My Goddaughter brought over her new puppy recently and guess who was having the most fun, ripping and running and play bowing....old stick in the mud, Hannah. Guess nobody can resist a cute puppy. Ha. Anyway, with your two, Graham may never go overboard playing but I will bet as the months and even years pass, you will see a developing comraderie amd even some play. It's fun to watch, so stay tuned.