There are 3 books in the Ruby Taylor Mysteries series. The newest book is Cow Crimes and the Mustang Menace which came out in 2005.

1
Romance Rustlers and Thunderbird Thieves

Book cover of Romance Rustlers and Thunderbird Thieves
Ruby Taylor is a fiery redhead with an attitude to match. Somehow her mom, a quirky ex-con-turned-Christian, coerces her into helping two women "wronged in love"—Maryanne (who is packing a loaded gun in search of her husband who walked out on her and stole her classic T-Bird) and Laura (whose…
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2
Sassy Cinderella and the Valiant Vigilante

Sassy Cinderella and the Valiant Vigilante

The harrowing adventures of red-headed heroine Ruby Taylor continue in this murder mystery complete with a frozen corpse, midnight intruders, and an unexpected rescue by lab mice. This sassy Cinderella's in for a crash course on university politics, new love, and what exactly it means to be a genuine Christian.…

3
Cow Crimes and the Mustang Menace

Book cover of Cow Crimes and the Mustang Menace

This award-winning series continues with a mystery of Ruby Taylor proportions—complete with thieving ranchers, tangled romance, and the redheaded heroine who just doesn't know when to quit. A series of mysterious thefts leaves a small town wondering why someone would take what is most meaningful to them—a beloved cat, a…