When we put Max down... he had a look in his eyes like he was ready. It was themost hard decision I have ever had to make... but I knew I was doing it for HIM!! I couldn't be selfish and keep him here for me.
I guess the best time is when in your heart you know it's time. No one can tell you. It's between you and Abby. With the look in her eye... you will just know.
Good luck and I will keep you in my prayers!