DOWK is a fun series, especially for reluctant readers. All of my kids hate reading and the two younger boys read every book in that series multiple times from grades 1-6 and still get the new book when it's released each fall. I finally had to put my foot down with my 7th grader and tell him that he needed to move on from that for "silent reading" but they still giggle over them at night.
That said, I don't know if I'd consider them a great choice for a precocious reader because there is far better stuff out there (DOWK really is geared towards kids who hate reading - simple language, cartoons, dumb humor, bathroom humor, etc.). I like the Beverly Cleary books like the Ramona series, or Junie B Jones, Amelia Bedelia, Geronimo Stilton, etc. If true beginning chapter books like those are too advanced, then maybe longer picture books like the "If you give a moose a muffin" series - those are beautifully illustrated and funny - or Berenstein Bears. My kids also liked beginning chapter books based on Scooby Doo.
If I were you, I'd read one, see what you think, and if you think the humor and story will appeal to her, have her start that in school but mix in other series as well. The stories are about friendship, family, are funny but ultimately warm and sweet and have a positive message mixed in with jokes about his parents, baby brother and older brother and the trials and tribulations of middle school.