The diva is coming out of her shell!
Inside the house is different to the dog.. she is trying to take over as alpha. if you are not doing so, you should use 'Nothing in life is free' with her and make sure ALL humans in the home are stay consistent with the training.... inconsistency gives an opening and the dog thinks they still rule. so all on the same page... no furiture either, she has to learn to work for everything which will keep her in line. As for eating, I know you have a few so either they eat in crates or one at a time, while the others sit and wait their turn... Queen Bee must be last.