(Newser) – The New York couple whose nanny allegedly murdered two of their children is having another baby, mother and father announced on Facebook. "We are very happy to let you know that Marina is expecting a baby in the fall," Marina and Kevin Krim wrote on a page devoted to a fund in their children's honor. "We are filled with many emotions as we look to the future, but the most important one is hope," they wrote, per USA Today. The couple has one other child, Nessie. Nanny Yoselyn Ortega, who has pleaded not guilty, was found fit for trial in April, the New York Daily News notes—but her lawyer argues that she's not mentally stable.