Thank you msdeb, McJag, and KrisNine.
My sweet girl was getting on up in age, and her back legs just totally gave out on her. She was doing fine, then suddenly that Thursday she laid down and could no longer get up, not even to potty. We got snowed in, and I did my best to keep her comfortable, but she was in so much pain. Crying around the clock.
Had to make the heartbreaking decision to have her put to sleep that Monday morning. Doc said there was nothing she could do aside from pain management, but still no quality of life. I got to be with her right until the end, held her and loved on her. Thanked her for all the happy years. Brought her home and laid her to rest.