His win there will pretty much wipe out her gains in PA.

In my opinion, the harm being done by continuing this process is greater than the party building in individual states that results from  it. Clinton has just about passed the point where she can exit gracefully, so she's risking the party, the presidency, the nation and the Clinton legacy (whatever's left of it) by "fighting" a war she can't win.

She's either blind, stupid or arrogant, or possibly a combination of all three.