No, she was not a full time student if she was not enrolled in a post-secondary educational institution where for at least 5 months of the year and she was classified as a full time student.
However, if she did not have gross income of $4,000 or more for 2015, you would be able to claim her under the Qualifying Relative rules if she was not a full time student in 2015. If she did have gross income of $4,000 or more you would not be able to claim her as a dependent on your tax return.
