My friend's husband left her without any notice and her agreement (more than 6 years). Since then, she has been filed her status of married and separate. Recently, she lost her job and insurance. She has to apply insurance through market place.

She's sixty years old now. When her husband left her few years ago, she was upset and unhappy for her life. She then sold their house and moved to appartment. Her kids grow up many years ago and not stay with her anymore. I wonder if she can use "consider unmarried" to file her 2014 tax return. If not, what's the best way to help her get subsidy for insurance premium. And how to do it?