IMHO, being this female dog has a strong red/red nose influence probably from the Red Boy line. The other percent or more showing in the fourteen pedigree search was the Bolio dog. There is a dog man, maybe a member on here that lives in N.C. That has a inbred black strain of the Bolio line off Patrick's Bull boy Bob etc. That also could be another consideration.

S_B thoughts are also very valid. Seems that older Turtle Buster bloodline has regained it's popularity. James Crenshaw in a article or video made some positive comments on the Turtle Buster line of dogs. Maybe you will get to try both and start another line of dogs. Cheers