No; read the OP again.

If A&C are found liable, it will be because they did not explain their dress code policy to her nor ask her if she was willing to comply with it.

They assumed that because she was Muslim she would not comply and so did not offer her the chance to say whether or not she would.

Had they done so and she had said she would not comply then that would have been the end of the matter.

jpb, my last comment.

You regularly blame all Muslims for the actions of a few; blame Islam for the despicable acts of some who claim to be followers of that religion.

You regularly call all those who do not agree with your ignorant comments, those who provide condemnation of these despicable acts from Muslim leaders, scholars, representatives, ordinary Muslims "deniers, apologists and deflectors."

QED.