The Headhunter's Daughter is the 2nd in the Amanda Brown/Belgian Congo series by Tamar Myers. It has dropped to $1.99 at Kindle and Kobo US.
Kindle US:
https://www.amazon.com/Headhunters-D...dp/B004EBT7KK/
Kobo US:
https://www.kobo.com/us/en/ebook/the...ter-s-daughter