The maternal relationship between Doris Grosnick and her daughter TP is confirmed by the direct inheritance path of autosomal DNA down to their DNA tested descendant TP.

The segmental (via DNA segment triangulation) and total DNA shared between TP and other confirmed descendants of Carl Friedrich Ferdinand Haut/Caroline Friederike Hackbarth is consistent with the expected ranges for their respective relationships. Since TP descends from Carl Friedrich Ferdinand Haut/Caroline Friederike Hackbarth through Doris Grosnick and her daughter TP, the presence of significant shared DNA between TP and other known descendants of Carl Friedrich Ferdinand Haut/Caroline Friederike Hackbarth validates the generational links along this maternal line.

This supports the conclusion that DNA was passed from MRCA couple Carl Friedrich Ferdinand Haut/Caroline Friederike Hackbarth through Doris Grosnick to TP, and ultimately to TP, confirming this direct ancestral connection through multiple generations.