More accurately they were able to trace her DESCENDANTS to the Black Sea area. The only way of knowing where she was from would be to do mineralogical analysis of her teeth and bones.
Just because people living in the Black Sea area today have similar DNA does not place her there. It would be like someone analyzing my mother's grandparents bones in a Canadian cemetery and declaring they must have been from California because their DNA is all over the population here.
It would be like someone a thousand years from now analyzing my mother's grandparents' bones in a Canadian cemetery and declaring they must have been from California because their DNA is all over the population here.
"Just because people living in the Black Sea area today have similar DNA does not place her there. It would be like someone analyzing my mother's grandparents bones in a Canadian cemetery and declaring they must have been from California because their DNA is all over the population here."
See the map above. The colored areas are refuge sites during the Last Glacial Maximum (18-23,000 year ago), one of the coldest periods during the whole Ice Age. The purple area in Spain is mainly where the people who would become the Irish and British were , mostly R1b haplotypes. The red area (Black Sea area) was mainly R1a haplotypes and were the people who were to become (mainly) the Vikings. They are comparing this DNA to the ancient homeland of the Vikings...no suprise to me.
This is my R1b (Y-chromosome) DNA migration map for the last 60,000 years. The fork just above m45 is where the R1's parted from the R2's. Just below M173, the fork there is where the R1a's parted ways with the R1b's. 90% of the people in Ireland and Spain have R1b DNA as do 68% of all other Europeans. As you would guess, 'I' and R1a are mostly the rest.
My mother's haplogroup is V and 'she' also migrated out of the Iberian refuge with the R1b's...as she miigrated further north 'she' dropped her association with the R1b's and 'hooked-up' with the guys with the 'I' haplogroup and eventually became the Sa'ami (Laplanders).