She's not a conservative so she might be concerned by the Democratic base hating her if she doesn't step down, or maybe be convinced it's the right thing to do.Who are you or Dem leadership to tell a constituency "you picked wrong, you don't get the rep you voted for"
Whether there is leverage or not a lower l leader of the democratic party can use their voice.
I don't understand this "well we should just do nothing and say nothing" approach