Here are two more:
Perfectly Dateless by Kristin Billerbeck
Amazon B&N
Daisy Crispin has 196 days to find the right date for the prom. There's only one problem--her parents won't let her date or even talk to a guy on the phone. Oh, and she's totally invisible at school, wears lame homemade clothes, and possesses no social skills. Okay, so maybe there's more than one problem.
Out of Control by Mary Connealy
Amazon http://www.barnesandnoble.com/w/out-...=9781441269911
Julia Gilliland has always been interested in the natural world around her. She particularly enjoys her outings to the cavern near her father's homestead, where she explores for fossils and formations, and plans to write a book about her discoveries. The cave seems plenty safe--until the day a mysterious intruder steals the rope she uses to find her way out.