I'd have to agree with Andrew on this one for sure. If you are dressed nicely I don't see why they would single her out. I have played in a few BCA National events myself and saw too many instances where people were not close to dress code and were not addressed. She would have been in the top percentage of the nicer dressed players IMHO.
you would think the refs would have much more pressing things on their plates to tend to than to *proactively* go after someone who actually looked nice in order to flex their dress-code muscle.
The spirit of the dress code is to try to have people look nice and presentable. She met that very easily.
Go beat down a slob.

best,
brian kc