Pa & DE State Tax Issue (Double Taxation)

Hello,

My wife works in DE and Lives in PA.  She got 2 W2s.  One for DE and one for PA.  They are identical except for entries 15,16 and 17 (State info and state wages).  I entered the DE W2 then added the PA info to it (DE and PA). When I went to do the PA taxes, somehow TurboTax is seeing it as another income and added the state wages and tips twice (one for PA and one for DE).  She only paid taxes in DE and not PA.  How can I get Turbotax to realize that the State wages and Tips should not be added (DE + PA) and also get the credit back from DE?