I supported my sick father and his 5 year old daughter (my half sister) financially for majority of 2021. They are both US citizens and my father used to receive Social Security benefits, and that was the only income he had, other than the support I provided. However, they did not live with me at all and they lived in another country. Can I claim them as dependents? And if yes, does that mean my filing status should be Head of Household?
