It was probably a naive and over enthusiastic new graduate wanting to show her dedication to the cause.
Lucky for her she was able to turn on the water works enough for Sue Chetwin to feel sorry for her ...
But then again maybe it wasn't a fake review. Maybe she genuinely has issues with Flick and how Consumer does their ratings and wanted to share her views. She then realised the potential conflict of interest and decided to put it right and Sue is just using this to get into the media. I guess we'll never know and probably don't need to.