Do I count as Jewish at all?

So growing up I knew that my great grandmother (mom’s mom’s mom) kidnapped my grandma when she was 5 and moved far from wherever they were from. I’ve been going through ancestry websites with the info I have and discovered some distant cousin has already filled in so much of the family and it turns out great grandmother was Jewish. Since I know what matters is the mother’s line, do I count as Jewish? I imagine that my ignorance of the Jewish traditions probably counts against me. I was just wondering and am grateful to any who take the time to answer.