avoiding taxes when selling property

Iam thinking of selling my rental property and dump the money in my daughter’s house to help her out with the mortgage payment. How is that possible without paying taxes when I sell my rental?
or would adding her name on the deed of trust help in not paying taxes on her portion?

Income is taxable when it is recognized. When you take the money from the sale of your rental property, your profit is taxable regardless of what you do with the money.

You can give your daughter as money as you want or pay down her mortgage for her without any tax impact to your daughter.