After a weekend of gang-related gun violence in which at least nine were killed, Chicago's police superintendent blames the wide availability of firearms

Krystal Scott is just 16 and already wise to the streets of her Morgan Park neighborhood.

"When I'm walking home, I don't know what I'm walking into," Scott said Tuesday.

But Scott thought she was safe as she sat outside her home in the 10900 block of South Throop Street at the end of the Fourth of July weekend, enjoying the weather and the steak tacos made by her cousin, Tonya Gunn.

It was past midnight on Monday and the party was breaking up when a car drove past and someone inside opened fire. Gunn, 44, was hit twice as her 11-year-old daughter sat in a car, waiting for her, Scott said.

Gunn was among 16 people killed in weekend gun violence over the long holiday weekend in Chicago. Sixty-six other people were wounded, a toll Mayor Rahm Emanuel said is "unacceptable."

Scott said she ducked when she heard the gunfire. "I got down and called the police, then I went over there and tried to keep her daughter away," Scott said. "She didn't need to see that, she's too young."

Relatives got the daughter into the house, where she called her father, Scott said. "She prayed, she cried."

Outside, friends and family gathered around Gunn. "They told her, 'Keep breathing, keep breathing.'  I guess she passed in the ambulance," Scott said.

Scott said her cousin had worked at the University of Chicago for more than 20 years, most recently in customer service.  She lived in the 400 block of W. 115th Street in the West Pullman neighborhood.

"She was a very loving and caring person," Scott said. "She always helped out."

Gunn's passion was cooking. "She was a good cook.  She always cooked when we got together."

And that was what she was doing Sunday night. "It was a small get-together, we were outside enjoying the weather," Scott said. "I couldn't believe it happened there. That's our family's home."

Asked her reaction to the burst of violence, Scott said: "I just want to say to the neighborhood and to the city, 'Be safe, be careful.' "

The death toll from the weekend gun violence in Chicago rose to 16 Monday when two men died from their wounds after being shot late Sunday night and early Monday.

Cassius White, 19, of the 8200 block of South Dante Avenue, was pronounced dead at 5:54 a.m. Monday at Advocate Christ Medical Center in Oak Lawn, according to the Cook County medical examiner's office.

White was shot in the 9600 block of South Sangamon Street in the Longwood Manor neighborhood about 12:40 a.m. Monday, according to police. A 16-year-old boy standing with him on the sidewalk was hit in the leg and survived.

Police said the shooter had fired from a light-colored sedan.

Also on Monday, 25-year-old William Allen was pronounced dead at Northwestern Memorial Hospital after a shooting in the South Chicago neighborhood Sunday.

Allen had been shot in the 3000 block of East 81st Street about 11:20 p.m. Sunday, police said. He had lived in the 3500 block of South State Street.

Two other people were shot in the same vicinity as Allen, and neighbors told the Tribune the shooting had been a running shootout. Allen was pronounced dead at 2:27 p.m. Monday.

asege@tribune.com | Twitter: @AdamSege