I'm so sorry for your loss. You post hit me hard and got me crying. I feel terrible for you and your family.
I was having this conversation with Stacy today and haven't shared about it on the thread. My Penny is 13 and we're trying to put her down before we leave. She's just gone downhill pretty fast, she's deaf, just about blind, can barely walk most days, she's starting to become pretty agressive, especially when it comes to food and has just about lost her mind. She cannot climb up and down the 3 steps to outside but she tries to jump on the kitchen table while we are having dinner. We called the vet yesterday to get the info and we're working on picking a date. I can't say she would survive the 10 days in boarding because she'll be too confused being out of her element and I know she won't survive the winter months and won't be able to go outside in the snow and ice.
It's so hard because it's like losing a family member.....my thoughts are with you.