In which case, you would be dealing with autosomal DNA as opposed to mtDNA. If you are trying to confirm your relationship to her through DNA, you would need to be on one of the testing sites (Gedmatch, 23andMe, MyHeritage, FTDNA) that provides a chromosome browser. Then, as Rick mentioned you would need to locate a triangulated match (3 or more people not closely related -- ie can't be you and your sibling or 1st cousin) to confirm the relationship.