so license to print free money then

I dont get how she is not being bought up on her actual performance rather than just the complaints. or is she claiming all your work as her own???

You need to convince IT to put a keystroke logger and track what shes upto on her pc so she gets in trouble that way.

Nobody else has said it, but its not the best time to be changing jobs unless youve got skills that are REALLY in demand else where.

Just dont do anything too rash and dont hand in notice until youve signed contract in another job.