Rules are rules for EVERYONE, this young woman should have read her ticket information and been aware. I would also feel it was not her first time flying, this weight limit has been policy for Jetstar for many years.
This is one of my pride and joys, it is called a Stanhopea Orchid. The flowers emerge through the bottom of the basket and have the most magnificent scent but a short lifespan of 3/4days..