Is there a difference in the intent behind the imitation under heading 1 and heading 2 of the definition you supplied? Are "following as a model" and "mocking" synonymic terms?
I'm done with the semantics.
You introduced semantics, not I. So let's continue down your path.
Clearly Coulter is being accused of imitation in the sense of heading 1 that you supplied.
In reality, her words meet the conditions of heading 2.
So she is indeed being misrepresented.