She didn't keep anything fresh or newly interesting going on in her series.

But she may have also peed in someone's shoe.

Sorry I can't help with what happened to Stephanie Plum, but I have a friend whose husband has read every one of the books, so I will see if he knows what happened.

around and doing what she's been doing for a total of nineteen books now.

The most recent, "Notorious Nineteen" was a real disappointment. I almost didn't finish it. I do think that Janet Evanovich has done everything she possibly can with the characters, and ought to just end the series. Write something else.

hasn't grown. She still, 18 books in, can't manage anything on her own and can't decide between the two men in her life. I don't see what either of them see in her. Evanovich might be able to breathe some life back into the series if she makes Grandma Mazur the star and retires Stephanie to something she's more suited to; something that requires very little in the way of brain cells or skills.

I say 18 books in, because I didn't read the 19th, so I don't know that she hasn't had some life-changing revelation. I doubt it.