In, Abby, In!

I was cleaning up the family room when I heard Hannah yelling "In, Abby, In!" from the other room. I assumed Hannah was trying to put Abby in her cage, and knowing that Abby usually ignores Hannah when any instruction is given by the 36" person, I finished what I was doing before going to investigate.

When I got to our front room, I found Abby laying on the floor outside of the cage, and Hannah sitting inside the cage eating a carton of blueberries....

I asked her to open the door, so she did.....
...which she promptly shut again and started laughing.

She kept opening the door and asking (telling) Abby to come in with her, but Abby wasn't going to have any of that! What is it about the dog's cage that my child loves?!