Can legal expenses paid for daughter's divorce deductible

No.   That was a gift to your daughter.  Gifts to family members are not deductible, no matter how the gift was used.  Sorry.   And....legal fees for a divorce are not deductible.

Gifts given to family members, friends or other individuals are not deductible.   Gifts received are not taxable to the person who received the gift, and are not entered on a tax return.

If your gift exceeds the yearly limit ($17,000 per individual)  imposed by the gift tax rules, then you will need to complete a Form 709 gift tax form and send it to the IRS, although it is very unlikely that you will owe any tax.    In 2024 that yearly limit will increase to $18,000.

TurboTax does not support Form 709.  It is not an income tax form and would not be included as part of an income tax return.

Here is a link to the form:

https://www.irs.gov/pub/irs-pdf/f709.pdf

https://turbotax.intuit.com/tax-tips/estates/the-gift-tax-made-simple/L5tGWVC8N