Shasta is a beautiful girl, a purebred TWC.
How is it that you want her to play with you? What are you doing, wrestling, or running around with her, or...? You can't make a dog play in a way they don't want to play, unfortunately...
I recommend a flirt pole with a critter-shaped toy hanging on the end. I've rarely met a working hound that didn't love them! Tires them out but keeps them from chasing you.
Found this img on Flickr to demonstrate: