Does my daughter have to file her tax if her income is less than $10000? How shall I file tax as MJF and claim her as dependent?

My daughter has a income of $7175 in year 2021. Since both federal and state hold her tax in W2 already and her income  is lower than $10000 and my husband and I want to claim her as dependent. So she chose to do not file tax, is that OK?

 

When I file tax with my husband (MFJ) and claim our daughter as dependent shall we add daughter's income  in adjusted gross income or not?