I was COBOE in a cong with a sister like this. She was a special pioneer and loved to bully others. Any other woman she perceived as a threat to her influence would be accused of immorality. It got to the point where we wouldn't let her comment at meetings anymore, but the org would not remove her as a special pioneer. They eventually moved her to another cong, she turned on her husband and now they both are out.
She stumbled a few who ended up leaving, but looking back, I hope they found better lives outside the org!