assuming you weren't married at the end of 2019 you could claim her as a qualifying relative (a dependent) if all these tests are met
1) she lived with you all of 2019 (temporary absences are ignored)
2) her gross income for 2019 was less than $4,200. if you need to know what's included in gross income post back
3) you provided over 50% of her support. support includes amounts spent for food, lodging, clothing, education, medical, dental, recreation, transportation and other necessities
