Is an adult child responsible for the finances of a parent in the ICU, getting only social security disability, and denied Medicaid?

Mother went into ICU after a fall, has been there months. Turned 65 in ICU and was denied medicaid because copies of taxes, deeds, etc were not provided (mother has no assets and SSD has been direct deposited into her bank account, which no one but her has access to). Patient can not speak due to ventilator but is coherent and can write, estranged daughter visited from out of state to try to help but social workers have been putting on great pressure to pull the plug on the ventilator/feeding tube (even though mother is not cognitively impaired). Daughter is being told that since the mother was denied placement in long term care facility due to medicaid denial she will need to come pick her mother up and take her home (even though that means unplugging her). Mother does not want daughter's help and in uncooperative, but social workers insist on requesting information from daughter, information daughter does not have access to.

Are the social workers in the ICU responsible for helping the patient obtain coverage?

Is the daughter financially responsible in any way for her mother or her mother's care - there is no POA and before the accident mother and daughter had not spoken for years due to mother's alcoholism.