Get your taxes done using TurboTax

My daughter became a real estate agent in the end of 2019.  She sold one house.  Her broker sent her a 1099-Misc.  She made a total of less than $6,500 for the year.  Turbo Tax is telling us that she owes $886 in federal income tax.   Why would she owe anything at all (much less almost 14%), when she made so little?  I would think she would owe nothing, at all.