Back when she had actually been able to use the app on herself, Tamika had given herself knowledge of German, so she figured out that what Randy and Barta were doing was what they thought Mistress Consuela wanted. Since they were wearing dog collars, they thought she wanted them to act like dogs. Once they were dressed in some of the virtually endless supply of sexy maid uniforms, they started acting much more like humans, although humans whose primary obsession in life was pleasing Mistress Consuela.
Consuela decided that the mistake everyone else had made was overuse of the app to solve problems that could be solved without it. Rather than using the app to fix the language barrier, she told Tamika to encourage the twins, as everyone called them, to learn English. They seemed bright enough to pick up enough to get by simply by being in an Anglophone environment.
Having all these white people (well, and Tamika) subservient to her gave Consuela an extra dose of pleasure as over the next few days she enjoyed fantastic sex and excellent cooking (Jack had something of a flair in the kitchen). But there were a couple of things that bothered her. She didn't feel right "owning" the German twins. Sexual submissiveness was one thing; slavery another. And although she didn't miss Brett Rivers at all, she did feel that she should turn Brett the collie back into a human. Maybe a luscious girl rather than an obnoxious man, but at least a human.
The solution, she thought, is rather than by tempting fate and using the app herself, have one of her submissives download it and use it themselves at her orders. But who? Couldn't be Tamika, obviously, or Tammy, who had clearly hit the danger zone, and the German twins were out because of the language barrier. Ann, Jack or Tanya, then.