Hello I am writing about my Chihuahua again you mentioned to exercise her, my big problem is finding any harness tiny enough for her, she weighs 2 pounds or a little more, she is only 8 inches long and her neck size is around 2-3 inches, no harness, don't want a collar it could break her neck as active as she gets, even a ferret harness is way bigger then her, she also eats everything and this past weekend I had to take her in for x-rays as she was very sick, she gets to everything before I get to her.
I am sorry to hear about your problems. I hope that her X-rays were diagnostic and that she is well now. You could check with your pet store about getting a harness custom made or you could nose-around on google/youtube on hand-making a harness. I am sure it won't be too hard. You could even customise a baby's tee shirt with an old belt/zipper/some clips and make her something.