I have not... Its not my type of reading... But for what I hear they are great books..with very cool stories...please read wanda's comment she seems to have the answer for your question.!
I have read several of her books, the ones that I have read are awesome, you do not have to read them in order, I thought so at first because they are all, like 1, 2, 3, 4, One for the Money, Two for the dough, Three for the, and so on..........then there are others like Plum Lovin, Fearless Fourteen, Finger Lickin Fifteen.......Most of the ones that I have read, have some of the same characters in them, but all have an interesting story, I will warn you that, when you pick one up, if you lay it down, you can't wait to pick it back up again.
Thank you wanda for your great comment... Actually I got a suitcase full of books and the mayority are her books ... I got them from someone that was gonna throw them in the garbage.. I dont like to throw books away so I took them all with me so I could find somebody that like them.. So I just figure to put them here for the ones that love to read this stories. :)