Its the morals of the employee, nothing more. I mean sure it was not a nice thing she did but like I said there are tons of stores out there who are more than willing to take anybodys money, no matter how much you weigh,.
So took a look at that "rue21", if that dump really thinks they are in any position to be picky about customers then it really is laughable.
While your care-free attitude works for you, it doesn't for most.
Using your logic, then me finding that someone spit in my food at a restaurant, I should just get up and leave instead of complaining to the manager.
Here is what would actually happen:
1. I would tell the manager.
2. I would call the restaurant owner if something wasn't done about it.
3. I would make sure everyone I knew was informed about it, including social media.