Is it permissible to use money allocated for a daughter's education for something else, and is it a right of the daughter or the parents?

The fundamental principle is that donated funds should be spent on the purpose specified by the donor. Therefore, it is not permissible to spend money donated for a daughter's education on anything else without the donor's permission. However, if it is known that the donor's intention was general solace and assistance, and not specifically for education, then there is no harm in spending the money on something other than what it was donated for. In this case, the money would belong to the father, as he is responsible for his daughter's expenses.