What insurance would be best for my mother?

She is 57, unemployed, and on a temporary insurance that expires in April. She has too much money for Medicaid. She lives in PA, but because she has insurance now, she might not be eligible for PA Fair Care for months, and it might be full by then. She has many preexisting conditions: Grave's Disease, migraine headaches (for which she takes prescription meds), history of vertigo, and several others. I can't cover her on my plan. She no longer lives with my father, but they are not divorced. He receives Social Security and lives in Illinois. She is very unlikely to get a job, as she has few skills, just a high school diploma, huge gaps in her work history, and a few dark spots, such a getting fired from a job and quitting another after just a few months. Any thoughts? Thank you.