one of my hobs did the same, but i knew what it was. he had eaten some of his sleeping materal and it had blocked his gut for food so i gave him heaps of normal milk to make him chuck up, i waa there when he chucked up and it turned out to be a big hair ball of rabbit fur, his aunty died of that aswell. so maby normal milk or a saltwater mix so she chucks up, thats ifyou think something is obstructing the bowel. good luck .