Give me a break.
Why would a child need this? Kids have to sleep. Parents have to sleep. Having someone or in this case, a support animal, who can tell when the child is about to have a seizure, can notify parents so they are there to help.
A seizure when a child is asleep can be fatal. A seizure and a parent doesn't know and no one does - because the child is 2 years old - can be dangerous.
Maybe if you bothered to spend 30 seconds learning what hydrocephalus is and why a service animal is important (including so the child can be home with parents and not away from them under constant medical attention) you might not be so blase about a toddler with a medical condition - not Suburban Suzy who takes her pet poodle everywhere as her service animal.