The Ghost of Max

Our poor old Boston Terrier, Max, was hit by a car back in November and passed away.  It was a sad time for our family but we have managed to get by it.  The running joke (perhaps joke is not the right word to use due to the seriousness of it all but for now I'll just use the word "joke") around here whenever our other dog Molly acts weird or barks for some unknown reason we'll just say it was the "ghost of Max" bugging her.  You see Max and Molly were the best of friends and did everything together but Max was like a younger annoying brother to her where he constantly bugged her and drove her crazy sometimes.  You see he would nip at her stomach or legs until finally she would go ape shit on him and they would have their big fight.  They would never hurt each other but Molly would make sure Max knew who the boss was!  If she ever tried to come down the stairs he would wait at the bottom of the stairs and attack her.  If anyone ever tried to pet her he would butt right in wanting to be pet.  When ever I let them out first thing in the morning he would barge right out in front of her like he was demonstrating his dominance over her.  If I threw the ball for them he "always" took the ball from her.  He was relentless!  But there were other times when they laid together licking each others face and sleep on top of each other.  Even though Max never really "hurt" Molly he would drive her to the point where she'd had enough and put poor old Max in his place.  It was quite funny watching the two of them together because you would think that she hated him and that he was jealous of any sort of attention she would get from us but it was really opposite.  They loved each other!  You see Molly hasn't really showed any signs of grieving and for me personally I think it is weird.  She just kept going on like nothing has happened.  She always wants to play and continues to eat.  But like I said there are times when for some unknown reason she'll just bark or run off and we just "joke" it is the ghost of Max tormenting her.  Well maybe he isn't really "tormenting" her, maybe he is "soothing" her?  Maybe the ghost of Max being with her is the reason Molly was never depressed with his passing?