Reddit mentions of Julie of the Wolves

Consider the discontinued Einstein Anderson series. Yes, it's about a boy, but it's essentially Encyclopedia Brown solving crimes using science. It's written by Seymour Simon, who you might be familiar with from his photo-rich picture science books.

If by creepy you mean scary, look at the Goosebumps series.

I have to recommend Harry Potter again because smart and science-y makes it easy for her to identify with Hermione Granger. She's a little standoffish at first, but the two (obviously) become good friends. And there are just so many very good lessons to be learned throughout the book series.

The Dear America series are fictional historical diaries of girls growing up in extraordinary times.

You might try Julie of the Wolves. There are several books in the series and the author, Jean Craighead George, has written a lot of other good ones.

Annnnd here we go again. I'm doing this with all books, just because.

Allegiant

Berenstain Bears

Calvin and Hobbes

Dune

Edgar Allen Poe collection

Fahrenheit 451

Gulliver's Travels

Hitchhiker's Guide to the Galaxy

If You Give A Mouse A Cookie

Julie of the Wolves

Kite Runner

Little House on the Prairie

Machine of Death

Neverending Story

Omnitopia Dawn (The book I'm reading now, actually!)

Pilgrim's Progress

Quarter Share (Also available free as a podiobook!)

Room

Snow Crash

[Tell-Tale Brain](http://www.amazon.com/s/ref=nb_sb_ss_i_0_9?url=search-alias%3Dstripbooks&field-keywords=tell-tale brain&sprefix=tell-tale%2Cstripbooks%2C222&rh=i%3Astripbooks%2Ck%3Atell-tale brain&ajr=2)

Uglies

Voyage of the Dawn Treader

Watership Down

Xenocide

Year Zero

Zen and the Art of Knitting