This is all very confusing-Form 1098-T-who files, and does she need to file?

My 18 y/o daughter is a full-time student and has a part time job.  She made $4298.60 and her Form 1098-T in box 1 has $8474.03 and box 5 has $9333.00.  She has a Pell Grant and Life Scholarship. We purchased a laptop outside of the school in the amount of $1200.00.   My understanding is that the difference in the boxes is $858.97.  Is the amount of $858.97 considered unearned income and since the laptop purchase is not reflected on this form how do we show the adjustment for the laptop? 

 

I file as head of Household and claim her as a dependent on my taxes.  I want to know do with both file? Does she need to file taxes with a single status with the Form 1098-T or does she even need to file the taxes at all?  Or do I file the Form 1098-T?