Anna has Wolf Hirschhorn Syndrome, a rather rare genetic condition, affecting one in 50,000. The main problems she faces are hypotonia, meaning she has very little strength, she has growth problems, intellectual disability, her communication is very, very basic, and once in a while she has epileptic seizures. So one of the problems she faces is how to interact with her surroundings, so the chair could primarily help her do that. The fact that she has to push a button in order to do something, allows her to interact.