She invited for a purpose. The purpose is over. Send her back. No one took her as a dependent for life.
Even if sending her back means she will no longer have access to the treatment she helped to get developed and will die shortly after leaving? Some compassionate conservative you are.
Me personally? I think she should be allowed to stay. Why? She has already given quite a bit in helping doctors to find the cure for her disease which has benefited thousands across this country and the world. She also has a college education and is working on her masters.
She has contributed quite a bit of good to this country. She should be allowed to stay.