Okay, here goes.
Kharma was in heat and poor Bimmer was going bonkers, so I took him with me most days since he was more contented curled up in the car with me or waiting for me than he was at home where he had to smell Kharma wearing his favorite perfume.
Shiva's favorite trip in the known world is to the feed store where I get the dog food. She knows where they keep the bones, she knows her way up and down the treat aisle to choose which type of cookies; she just considers it "her" trip.
Well, Bimmer and I went to get dog food one day.
We brought home three big knuckle bones, the dog food and a couple of bags of cookies.
Shiva was mightily PO'd. She was miffed. Her feelings were crushed. She'd missed "her trip!" But I didn't think about all that.
Shiva pouted all evening. She was a pain. She took all the bones and DARED Bimmer or Kharma to try to touch one. She gathered up all the toys. She gathered up all the blankets and layed on them on the sofa. If Bimmer or Kharma (depending on which one was inside at the time) came over to be petted Shiva bounded off the sofa and shoved them out of the way. If she thought I wasn't looking, she'd snarl her lip up at Bimmer or Kharma.
After we went to bed and I was almost asleep, I heard Shiva rifling through the kitchen. I got up, and sure enough, she was in the garbage. I got after her and told her to go back to bed. Thirty minutes later I heard a crash. She'd climbed on the counters and knocked some pans on the floor. I scolded her and sent her back to bed again. The third time, Shiva had dragged a box over to the refrigerator and was standing on it trying to reach the top of the fridge. She'd already emptied the garbage can all over the floor. I went ballistic! Three o'clock in the morning was NOT the time for this kind of foolishness. I yelled at her and shoved her out the front door (she hates going outside at night, especially by herself) while I cleaned up the mess.
I let her back in, made her climb up on the sofa, made her roll over on her back, got right in her face holding those big jowls so she had to look at me and started chewing her out. Oh, she understood exactly what was going on. You've never seen such a face! Then it dawned on my why she was being so rotten . . . her nose was out of joint and she was jealous because Bimmer went to the feed store! I gave her one last scold and asked her if she understood. She blinked those eyes, squeezed a couple of tears out and whined. Then I sat down next to her, told her she was better than that and I knew she could be a good girl. I told her I understood that her feelings were hurt because Bimmer got to go, but that she had to take turns and I would take her the next time. She sat up and draped that big head over my shoulder and stuck that snoot in my ear and whimpered a little bit until I put my arms around her neck and hugged her and told her I loved her and wanted her to be my good girl. Then she made one of her Wookie noises and looked at me and gave me a nose rub and a big yawn and followed me back to bed and layed down on the floor next to Bimmer, nuzzled him and slept for the rest of the night. When we got up the next morning she was her old lovable self.
Sometimes you just have to figure out what it is that's got their furry bloomers in a twist and have a heart-to-heart. From what you've told us about Addie, she doesn't seem like she appreciates any kind of change in her life at all, and she does seem to kind of enjoy torturing Hammie, doesn't she?