In a gut-wrenching discovery, a letter Gabby Petito wrote to Brian Laundrie revealed she begged him to “stop calling me names” before he killed her, RadarOnline.com has learned. The release of the letter comes months after the families settled for an undisclosed amount in court following a lawsuit filed by the Petitos against the Laundries over the death of their daughter. In the previously unreleased love letter, obtained by the New York Post, Gabby begged Brian to treat her better. “Brian, You know how much I love you, so (and I’m writing this with love) just please stop crying and stop call…