Claiming Dependant

My daughter is 19 and attends college full-time. She works part-time. She lives near her school and was only home 2-3 months total last year. We do provide more than half her support. Turbo Tax says can not claim as a dependent? Guessing not an issue last year since, school started in August which put her living at home for over half the year? Doesn't seem right if we are still supporting her?