I forgot to mention that it's not necessarily your word against hers. Before my father retired, one of his specialties was forensic document analysis and he was also a handwriting comparison expert. You would be surprised what is hidden in plain sight in records and documents that have been altered or "cleansed". This person may think that she's altered your records cleanly, and without any trace of modification, but she probably left behind all sorts of mistakes. I think you have a pretty strong case, and I'd be willing to bet that with the right legal representation, you could win this.