In order to deduct these premium payments as medical expenses, your daughter must qualify as your dependent.  Please enter your daughter in TurboTax to determine if she qualifies.  Essentially, if you provided more than half of her support during the year, she likely qualifies as your dependent.  If so, enter the premiums under health insurance as you proceed through the interview for Medical Expenses under Deductions and Credits.

Please see IRS Pub 502 for more information.  https://www.irs.gov/pub/irs-pdf/p502.pdf