Las Vegas police Lt. Ray Spencer said the woman was in the house with her boyfriend and three small children when her ex-boyfriend broke into the house.
Graciela Gomez died at a party on the 200 block of Beesley Drive when someone fired multiple gunshots into the house, striking her in the abdomen.
The fourth annual 1 October Sunrise Remembrance ceremony was held on Friday at the Clark County Government Center Amphitheater in downtown Las Vegas.