interaction, no matter what it is, is REALLY important. Ever watch a show on the TV with wolves or any dogs.. sometimes they walk up to each other, and for no reason, bump the other or just rub against each other and wander off...
You can play all you want, but, if your dog is like brute, and they know that it's a forced round of playing, they wont want to.. You need to pet her, teach her things, even if you just sit and talk with her, or put your hand down and rub her head, ear face back.. anything.. Sometimes all they want is for you to sit with them and play a game of pokie... Sit down, face her.. smile big and rub her like you've never seen such a wonderful animal. Say her name happily and play with her like you want to. Be excited when you play, sometimes they just need to know you care... Show her and love her. She's most likely very loyal if not completely loyal to you... You should show at least some loyalty to her.
im not saying this to yelling at you. I've seen so many dogs that are just.. sad... people own them sometimes to say they do.. LOVE HER! she loves you. Do what comes natural when you see her. Roll around with her. play with her. She will respond.
