Well she just dropped out of the race, so the “spoiler” theory is out the window.
Not so. She accomplished her mission. Her tally in the next primary would be negligible anyway so there was no point to staying in after Tuesday. And if she had stayed in then people would begin to talk openly that she was just trying to act as the spoiler. That would make the Sanders supporters mad and be self defeating for the Dem Establishment so she got out before that talk began.