Is This Acceptance?, Yet even more confusion. Options

[MissingHolly]

Sunday, two days after I had Holly-kins sent to Rainbow Bridge, I was at work, seriously missing her and doubting I could make it through the day without crying my eyes out in front of my many coworkers and customers. Before having a break-down in the middle of the store, I decided to go to the bathroom to take a few minutes to myself. On my way there was a small white dog sitting in a cart while his owner shopped through the electrical wire. When he saw me he jumped up and put his front paws on the top of the cart, trying to jump out to get to me. I pet him for a while and let him kiss at my hands and I felt better. On my way back from the bathroom I saw the same dog, his owner still shopping, and once again he got excited and I pet him some more before heading back to work. I don't know what exactly it was, but after I pet that little dog I felt tons better ... like everything was right with the world and, while I would miss her dearly, it was okay. Is this normal? Should someone else's dog have made me feel like that? I'm not sure I understand why it wasn't Holly's little sister who made me feel better instead of a complete stranger's dog that I'd never seen before. Am I accepting Holly's death so quickly or is this something else?