I just walked past the door and happened upon this scene. My first thought was, "Oh, that is sooo sweet. Lulu went to sit by Bella, two peas in a pod." Upon closer inspection, I realized that Bella is laying on top of Lulu's leash so, while I would like to believe that this scene is all about love, I think it is much more likely that Lulu is being held hostage, knowing if she dares to move and disturb the Queen, she will get growled at.
Ahhh... sisterhood.