Kennedy Kathleen Robbins can’t walk, talk or sit up. But her sense of timing is already immaculate. The 5-pound, 10-ounce baby girl, daughter of Kristen and retired Master Chief Aviation Ordnanceman Daniel Robbins, entered the world at Naval Medical Center Portsmouth, Va., at 12 minutes past noon Wednesday. That’s 12:12 p.m. on 12/12/12. “Everyone thought we were lying — no one believed it,” Kristen said in a Navy news release. “When it sunk in, then they said it was a miracle, a sign. Regardless, she’s a blessing.” Kennedy wasn’t due for another week, but doctors at NMCP decided to induce…