Deductions & credits

Yes, I claim her as a dependent.  She had $1,716 in income and $9,067 in unemployment.  I thought anything less than the standard deduction of $12,400 and she would get all her tax paid in back.

 

I claim my son as a dependent but he got the $12,400 deduction.  He had $13, 168 from wages.  Is that what is making the difference?