Deductions & credits

When entering in TT, it asks if she made greater than $4300.  When saying yes, it says she can't be a dependent. 

So where does the worksheet come into play? From June-Dec she made greater than 35K.

 

If using worksheet, do i calculate her living expenses for the 5 months on campus (rent, utilities, etc.) plus her portion of our home?  How do i even begin to calculate clothing, travel?

 

If we don't claim her, then she is able to receive recovery rebate.  please advise

Thanks