My condolences. I like cats and dogs (except irritating ones ), but to this day do not want another one. I went through it twice and, to me, I lost members of the family. I feel no desire whatsoever to 'get another'.
Sorry to hear about your loss. A tincture of time is about all that you can take.
When I was 12 my cat (called 'Kitty') died following a stroke. We had her put to sleep when she was pretty much totally paralized. I was inconsolable. She was 13 (and pure black). I'd never known anything but having her curled up with me in bed at night. Years later I'd still wake up and feeling a lump beside me would assume it was her. I still have a special fondness for black cats.
"Without ambition one starts nothing. Without work one finishes nothing." ~ Ralph Waldo Emerson
It is a really hard decision and one that I had to make almost a year ago. It sucks! Your Mom is going to need support. Remind her that there comes a time that you have to ask why you are keeping them alive. Is it for you or for them? If it's for you, you are being selfish. It sounds like your family made the correct decision even though it hurts.
I found it helped looking at old photos and thinking of something particularly cute or funny they did. Geez, I'm tearing up a little myself.
Very sorry for your loss. Light a candle in Brandy's name...
Sorry to hear about your loss. I have three family dogs at this time and could not imagine coming home one day and not seeing all three of them running up to meet me at the door like they have done every single day they have been part of my family.
No matter if you leave the house for a couple days or a couple of hours, they are just as excited to see you either way and I love that about them all. Dogs are incredible animals.