My wife's estranged father had a paralyzing-stroke a year ago. Despite not having a close relationship, we paid hospital and hospice care for the first few months until doctors determined he was not going to make further improvement, and we had to find a permanent hospice for him. We were paying sustainable hospice accommodations (within our means), until suddenly he brought in his ex-lover, and gave her power of attorney and other law capabilities. She now dictates where he stays, the services he takes, controls access to him and is using the local court to try and force us pay for her healthcare choices for him. She is using "discovery" rules to tally my wife's economy, in order to use that information to ask for everything the court can allow her to take in the form of a "Pension for his care."
What are possible protections for this? How can we be held liable to pay for another person's service choices to benefit a patient, and pay monies for treatments and unsustainable accommodations that have been confirmed will have no effect on the patient's condition?