Her topics never appealed to me, so I can't comment on her latest. I do think, however, that authors often seem to get in the same work rut many do. Pretty soon they are doing the same plot book after book with minor changes on characters' names and locations and/or they just burn out on the no. of books they've contracted for. The more successful ones may feel they're "entitled" and their fans won't notice or care.
I also continue to believe that those who publish more than 2 or even 3 some years are, in fact, a "trade name" like the fashion industry where many produce items under a Name Designer label. I think there are multiple "ghost writers" who are pumping out works that are sold under the well-known Book Author Designer Label. That's the only way I can logically understand the logistics of the time it takes to write, edit, proof, re-write and still get out several new, long titles in a given year, year after year.
jane