This series by Susan K. Marlow are fantastic! I love the old western feel to the books and the fact that it has a solid Christian theme, but without sounding preachy. It's just natural! In a nutshell: this are a must read for all ages. I hope to be hearing more about Andi!
My siblings (ages 10 & 13) love these books. I'm their book previewer, and these books are great. I'm a harsh critic when it comes to books - especially adventure books. But these are awesome in every aspect. From the story line, to the characters, to the morals, these books are extremely well written. Many authors try to "tell" you about the character; Susan Marlow "shows" you their character. In fact, you feel like you know them.
These books aren't for girls only. My brother is 13 and has thoroughly enjoyed these books. Yes, the main character is a girl, but the series has a strong male presence in the form of her 3 brothers and her friend, Cory.
We met the author and bought these books originally at a homeschool convention. My niece saw my daughter reading them and wanted to read them, too. So, I found the set here for cheaper than on other websites and bought the set for her for Christmas.