The man accused of slugging a woman in the face during a random antisemitic attack in a Midtown subway station brutally beat his 70-year-old grandmother a day before the hate-filled assault, the Daily News has learned. Christopher D’Augiar, 28, was brought before a Manhattan Criminal Court judge Friday for beating his grandmother in the E. 102nd St. home they shared on the Upper East Side two weeks earlier, prosecutors said. “It is important to note that this incident happened on Oct. 13, and yet the police officers observed bruises even today, 13 days later,” Manhattan Assistant District Attorney Damyre Benjamin...