re: When is it time to put down your pet?

Energy is the real key. When they lack that, it’s time. Also, you asking this question is a good thing. The last person to realize it is time to put a pet down is generally the owner, for obvious reasons. Most pets end up suffering for a while because of this. We just talk ourselves into believing they “aren’t ready”.
So, this is a great question to ask, and it also sounds like she has some more time left. Especially if the masses being removed helps her out.
As someone else mentioned, I would absolutely crate her at night and put a pee pad down. So much easier.