I posted last month about Scarlett's comfy spot on top of my dresser, and then about Melly usurping it. Lately, though, instead of waiting until the spot is vacant, Melly has been kicking Scarlett out of it. However, I don't think that's actually her intention, because she goes right to the far corner of the dresser, curls up, and minds her own business. I think she is trying to hang out with Scarlett while still abiding by Scarlett's space and eye contact rules.
Of course, if Melly so much as twitches a whisker in a bothersome manner, Scarlett starts growling, then Melly taps at Scarlett (she doesn't have much force behind her smacks), and it all goes downhill from there.