Income

I gave my daughter 50,000 to help her refinance her house to pay her ex his 1/2 of the equity.

I want to say that the 50,000 is split  16,000 from me to my daughter  16,000 from my wife to my daughter

16,000 to her son from me and 2,000 to her son from my wife.  This should exclude this income from being taxable.

Is this a correct assumption?  Will this fly so she won't owe any gift taxes on the 50.000?