Mikey is her guardian...he gave the order of no food or water. In the past, he's also ordered no atibiotics for infection. No therapy. No going outside.
Even a guardian cannot legally prevent a person from eating! That is called abuse and neglect and is a crime. A judge may be able to order a feeding tube removed but after that I cannot think of any legal authority that would allow anyone from helping her to eat and drink on her own! If either Bush is looking for a way to help Terri why not challenge this inhumane judge on this?