The Ruth Is Out There — Eric Ugland

Ginger Mitchell returned to Portland following a stint as a high-class Vegas escort, and now she's going to become a detective. Just like her mother. Her dead, murdered mother. Ginger hasn't gotten to the bottom of that one, but at least she's got one solve under her belt.
Ruth has nothing under her belt â€" she's only got a swimsuit on. Well, technically, part of swimsuit. And no clue where she is. All she's got is the phone number of the girl she saved from the frat boys the day before, Ginger, scribbled on her arm. Hopefully Ginger really is a detective, and can figure out where Ruth is, and how on earth Ruth got wherever the hell she is. 
Can Ginger solve case number two before Ruth freezes to death in the Oregon forest? Or gets eaten by methheads? They eat people, right?