She was a fine companion, on many a walk in the woods.
Since my dog Phin died nearly two years ago, I don't do the daily morning walk any more, just an afternoon or evening exercise. It freed up some time, but I think it's been bad for my overall fitness and health.
Congratulations for making the tough decision. Sounds like a very humanitarian way to depart. Too bad us humans are not allowed similar accommodations when our gait becomes unstable.
Having a dog usually meant extra time squeezed from somewhere but often provided moments for perspective. I had a dog in Chicago in medical school. Duke needed morning, afternoon and evening walks. I always felt pressured. But getting out was good for us both...well, essential for the dog and maybe the same for me but I did not see it that way then.