Andrea tells the Governor that she "lost" her family (parents and sister), implying that she knows her parents are dead. However, in "Vatos," Andrea and Amy speculate that their parents are still alive - that "maybe Florida wasn't hit so bad." There is no indication that Andrea knows one way or another whether her parents are alive or dead.
11 and a half minutes in, after Daryl drives off on his bike and Axel tells him there's something wrong with his ride and that he can fix it, Glenn is closing the fence gate and on the right of the screen you can see a crew member in a white shirt leaning on the fence.