mtDNA Margaret Kingery dau of John b,c. 1775 VA

Through mtDNA I'm trying to verify that Margaret Kingery who married Jacob Beck 30 June 1795 Shenandoah Co VA is the mother of my g-g-grandmother Mary Peck, born 15 Oct. 1800 Shenandoah Co., VA. Through DNA I've found out a Jacob Beck/Peck is Mary's father. Only through DNA did I find out who her father was and also that she was raised in Washington Co., VA and not Shenandoah Co., VA. Could this Jacob Beck who married Margaret Kingery be her parents? I have my mother's mtDNA and would love to correspond with any Kingrey researcher who could help me verify this!