Either she doesn't have any grounds for impeachment and she is using and abusing the power of her office... Or she has something that could be an impeachable offense and she's been sitting on it - making her an accomplice after the fact (by helping to keep it a secret) in whatever high crime or misdemeanor she would accuse the President of.
You can't have it both ways Nancy - you're guilty as sin.
Actually it was ok she threatened with another impeachment because it certainly revealed she has indeed weponized the House....along with all her other threats.