Yes. I worked in nursing on a critical care unit, and provided care for numerous end-of-life patients. While most families respect the wishes of their dying kin, not all of them do. Two cases stick out in my mind.

One was a woman with widely metastasized cancer who was in unbearable pain, and wanted desperately to be made comfortable and allowed to pass peacefully. Her grown daughter argued with her, then once her mom was asleep from the morphine, she rescinded her mom’s DNR and stop all (yes, all) of her pain medications because she said we forced them on her to make her agree to Comfort Measures Only (our order set for continuously titrated morphine, among other steps, to make patients comfortable and allow them to naturally pass away.) As she was her next of kin, that is very much legal for her to do once her mom was incapacitated. She said it was only God’s decision as to when her mother died. Fortunately her mom prevailed and she passed on her terms, without pain.

The second was a very old woman who literally had half of one lung left after cancer took the rest. She was in horrible pain, unable to come off the vent, was in kidney failure after prolonged mechanical ventilation, and plagued by pressure sores that developed rapidly on her super fragile skin. She wanted to die, and asked to stop all interventions, but her daughter sued to prevent us from enacting CMO (even though her mom requested it.) An injunction prevented us from giving her any narcotics until Ethics and Legal got things handled. Meanwhile, her mom straight up suffered. It really fucks with your head when you are the caregiver in that situation.