So rather than sweep it under the carpet why not consider the options that can help to overcome this problem. If not immediate maybe gradually.
Does being a freelance model mean she can disregard the efforts and mock the intentions of other freelance photographers? Paid or not paid, full time or part time. Taking responsibility should not be conditional to a person's status, but it does require enforcement to ensure certain aspects of the employment are met to the minimum at least. I'm sure several of the photoshoot organisers are part time or freelancers as well, but they still happily accept the subscription charges imposed on them.
I have stopped engaging models through CS for a long long time cos of their lousy reputation and my example though not linked to CS, still resonates similarity to what some shooters here experienced. I do feel for them and hope through certain implication from me, could eventually balance the favour to them.
But that is just me...