Unless your daughter is on the deed or the mortgage then no, she cannot deduct the mortgage interest on her tax return.
<<Unless your daughter is on the deed or the mortgage...>>
Daughter must be on the deed in order for her to deduct mortgage interest.
Per the IRS:
You can deduct home mortgage interest if all the following conditions are met.
You file Form 1040 and itemize deductions on Schedule A (Form 1040).
The mortgage is a secured debt on a qualified home in which you have an ownership interest.