The reason national party leadership keeps propping her up, is because the vast amount of people leading the party is also too old to be in office, or will be before their next term is over.
It’s like wondering why cops never turn on the “bad apples” there’s an unspoken agreement that everyone has everyone’s back. Unless theyre progressive and/or a rising star like Franklin, then their treated worse than republicans because they’re a bigger threat to party leaders who occupy seats that will never go republican