Maybe------if she lived with you the whole year and had less than $5050 of income--not counting Social Security-- then you may be able to claim your GF as a qualified relative and get the $500 credit for other dependents.
IRS interview to help determine who can be claimed:
When you add someone as a dependent, we'll ask a series of questions to make sure you can claim them. There may be other tax benefits you can get when you claim a dependent.
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