i have read the several times ... must be missing something.
i can't find any direct evidence that the woman in question expects to take the class for free; that she plans to be disruptive or to undermine your methods and authority as instructor in any way.
it is unfair to credit thoughts to her mind or put words in her mouth because of what others have done. they are them. she is her.
it's time to get it settled once and for all.
we can't help you do that.
call her.
thank her for the compliment of encouraging her friend to attend your class.
give her credit for being such a good friend she's willing to pay for and sit through a class for beginners just to show her support.
[if you can afford it] tell her you would like to show your appreciation by offering a reasonable discount on the class fee.
if she balks at paying, then she is not a reasonable person.
if she is not a reasonable person ...
then you needn't care if she's offended.
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- necessity is the mother of invention. lazy is the crazy aunt.
