This forum has no access to your return, so here are the rules for her to be your dependent - either a qualifying child or relative.
She must be a US citizen, resident alien or national or a resident of Canada or Mexico with either an SSN or ITIN .
Then you can claim him/her as a qualifying child if all these tests are met
•She has the same principal abode as you for more than ½ the tax year. Temporary absences are ignored. If she was temporarily absent or born during the year she resided with you for all 12 months.
•If she is not a full-time student, she’s under 19 at the end of the tax year. If a full-time student, she’s under 24 at the end of the tax year. (full-time means she attended school (online courses and correspondence schools don’t count) during any part of five calendar months during 2025)
• She hasn't provided over ½ his/her own support
• She didn't file a joint return unless there was no tax liability, but merely filed jointly to facilitate the refund of taxes withheld or estimates paid
or you can claim her as a qualifying relative if all these tests are met
• Her gross income for 2025 was less than $5,200
• You provided over ½ her support
- Includes amounts spent on food, lodging, clothing, education, medical and dental expenses, recreation, transportation, and other necessities
So check your answers. if you have questions about any test, put them in this thread and resubmit
