Earlier quoted context omitted.
It was your fault. You made a modification to a production database without understanding the full repercussions. You brag about how your refactoring made her software better, but you are ignoring the fact that you got into that mess because of a failure to follow best practices and common sense.
Sure it was my fault she used functions within functions because she didn't know how to understand Pythons module system. It was my fault she had big nested hashes without any comments to explain the structure. It was my fault she had two variables "Indexes" and "indexes" in the same function. I must be the shitty coder, not her.... I at least try and make my code maintainable.
[1]Or she may not be. Often times when you develop a system or even write a piece of code, you operate under certain constraints that might make it impossible to make it fool-proof. You may also not have the opportunity to come back and refactor it later. Maybe that was the case when she wrote her code. You may have had the time to debug what she wrote and even re-write it from scratch. She may not have had that luxury.
Heck, maybe she wasn't even a professional programmer. Maybe she had just taught herself some basic programming and wanted to apply it to the job to add value to the company and succeeded in doing so, and she had no idea that some douchebag would come in at a later date, break her program and then blame her for being a shitty programmer. The point is: her code worked at the time she wrote it. It was you who broke it. End of story.