It's so hard for ourselves to lose our dog friends but I think it's even worse to see them mourn each other...
I'm glad you and Lily can talk about it. Daisy is better than she was when Ned first left us, back in March, but she is not the same dog she once was, and I don't know that she will ever be. I'm doing my best to make however much time she has left (end-stage renal disease, per the vet, and unpredictable how well or poorly she may do for how long) the best I can.
Hugs to you and Lily.