She thought she would take a stand and have Collins and/or Flake rally behind her. Instead, she's found herself twisting in the wind, the lone Republican 'No' vote against a Republican-nominated Supreme Court Justice.
I can't imagine what's going through her head right now but it's probably something like this, "I sure f***ed this one up."
She still has tomorrow - she could vote Yes. No one's stopping her, right?