If a dog is very stressed, unfortunately play tends to be on the low end of priorities. Your dog may be suffering from separation anxiety and she may tend to be on edge most of the time in fear of you leaving. In order to get her to play, you might have first tackle the underlying anxiety. I know it sounds like a chicken and egg scenario, but if you can lower her anxiety a bit, she maybe more open to relax enough to play when you are around. Try super attractive toys such as toys made of real rabbit fur, interactive toys filled up with tantalizing foods and toys with squeakers. Try hide and seek with a helper who holds her at a small distance (from which she doesn't pani) while you hide and then call her and praise her and give a treat Experiment. Praise even the smallest signs of play.