Henson's husband, Darryl Henson, said the family's children were often seen in the neighborhood and appeared well behaved.
"I was very surprised when I heard," he said.
Kirsti Rubino, who lives in the house behind the crime scene, said she heard "banging" sounds around 4:30 a.m. Friday and went outside to see a half-dozen police officers looking around with flashlights.
Rubino said she had met one of the residents, a girl she believed to be about 11 years old. That girl was friends with another neighbor, Rubino said, adding that she was not sure the occupants spoke English.
"There were always cars back there," Rubino said of the occupants. "They would come at night and leave at night but they never did anything that would warrant attention.'"
A search of online court records in Jackson County, where Independence and Kansas City are located, did not yield any criminal records that appeared to match any of the three people killed.