It may be possible to confirm family relationships with Elizabeth by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Elizabeth:
Braxton Brooke-1 and Braxton-53 appear to represent the same person because: Same husband and approximate BD, but note differences in mothers. Since there is a question about which wife of George Braxton was the mother of Elizabeth, I suggest unlinking the mother from each of the Elizabeths to be merged, as well as any of her siblings, so that the Elizabeths can be merged, and the proper mother be again linked when better source documentation can be found.