It's interesting that Jenn has "started seeing a new therapist".
Many narcissists love going to therapy as it gives them a platform and an outlet for supply and attention. It allows them to engage in expensive, special treatment (i.e. cuntcierge class), and validate their own delusions by rehearsing, repeating, and perfecting their woes of persecution (i.e. the Unwell Three) and thankless, constant work (i.e. raising two kids, full-time editing, doing laundry, burning overpriced vegan box meals).
It also gives the narcissist the opportunity to make public statements like "I've started seeing a new therapist" for additional attention and validation, whereas most people would keep such a private matter to themselves.
Many therapists will eventually discontinue therapy with a narcissist once it is clear that they refuse to critically evaluate themselves, or the patient simply does not progress and uses the time to speak about themselves with zero introspection.
Regardless, it is certain that Jenn's shocking tales of horrible people on a website which do nothing but write nasty comments about her appearance, intelligence, and maternal instincts are providing quality content for one lucky therapist's notebook.