(VIDEO) Woman, four-year-old grandson killed by Katyusha that hit house in Meron; child's parents, six others, including 10-year-old girl, also hurt; earlier, Katyusha rocket hits house in Safed, wounding 12 people. One person in serious condition after sustaining head injuries; some 14 rockets hit town Friday afternoon. Simultaneously rockets fired at Nahariya, land in heart of town; two lightly injured in strike