Really sorry. Every dog is different. You will always remember all the fun you had.
Wife had to take in mine for a checkup while I was at work and nothing more could be done, I cried for a month, don't know how she even got back home. We lost 3 dogs that summer, I took the one in, she took 2. The other ones that were somewhat better were the ones that just didn't get up, or my son's that laid in his favorite spot and went to sleep. We have a lab mix that is 13 and really slow I dread the day. If can be I will never put Karen through that again.