Dakota's veterinary assistant remembered a doggie wheelchair they had in the attic, and they have given it to us on an indefinite loan for as long as Dakota needs it! It has really improved her mood (and mine).
Dakota has a spinal problem now and is unable to use her back legs. We have been using a yoga strap under her hips to take her outside. But now, the "wheelchair" gives her more mobility and she likes it better than the strap. She can also more easily eat and drink.