If anyone is reading this, wondering how to comfort a friend who's suffered the loss of their pet, one thing to NOT do is to suggest a new pet! They will come to that decision on their own in their own time, but suggesting it soon after the loss is disrespectful to the grieving process that's necessary to the people who are suffering. That's my humble opinion anyway. I've found it hard to be nice when I respond to this question.
I knew I wouldn't get another pet when he eventually died. It wouldn't be fair to the animal. My schedule is very busy and I made an extra effort to be at home with Rush, because I was worried about his health and I knew he was getting along in years. The house is not as full as it was when he came into our lives, I'm divorced now, my son is going to college and my daughter will soon have a busy social life as a high schooler. We don't have the time to give an animal the love and attention it deserves right now. We still have our Miss Kitty and she gets lots of love when we're here, but she's pretty independent as well. None of the well-meaning friends have paused to consider what Rush's recent illnesses have cost me. I still haven't paid off the ICU visit which was over $1000 several months ago. I have no idea what the final visit and cremation costs will be, my vet told me just to go home and we'd take care of that later. The several days of visits prior to his death cost me many hundreds of dollars as it is. If they want to help, how about offering to help with the costs??? Not by suggesting I run out and get a new puppy!

Sorry for venting, I just had to be nice to my ex-husband which is not easy on the best of days and calmly answering why we were in the room with Rush and then answering if I was getting another dog was almost more than I could take!