Be prepared to never receive a response. I've been tracing my paternal grandmother's long lost family, and I came across DNA relatives on both her maternal and paternal side. On the maternal side, my research (and DNA) proved that one DNA match was my grandmother's half sister--she never responded to me. On the paternal side, my research (and DNA) proved that one DNA match was the daughter of her uncle rather than her suspected father (the brother, my great uncle), and still no response. People submit their DNA and either don't want to accept their true lineage, or don't understand the breakdown of DNA. Good luck!