Not taking sides here but if 10people sprayed a tiny bit to test the smell then you bought that bottle took it home and it lasted only 2weeks instead of 2months. Wouldn't you then be annoyed you bought a product that was used and you didn't get your money's worth?
Maybe a few emails to the company's provide testers would solve all the problems?
Yes she could have said something in a nicer way tho but maybe she was having a bad day? We all have them and slip up and are rude to others at some point. We are all human, maybe try forgiving her fault let it go and releasing yourself of this upsetment and stress you will feel better xx
Just a thought....