More than one shooter?

This girl says she talked to the shooter, while she heard more shots!?? I mean, wait, what? Again, witnesses are saying there were more than one shooter. I mean, what is going on!?? A friend actually had a good theory, well, she made the connections to Justin's performance linked to this shooting. Well, just listen to what she says tho!?????

"“As we were walking, the whole class together, I actually was speaking to the suspect Nikolas Cruz,” explained Miednik.

“And as I was speaking to him he seemed very – I don’t know what the word is – he was trouble in high school. So I actually joked to him about and said, ‘I’m surprised you weren’t the one who did it.’ And he just gave me a ‘huh?’,” Miednik said.

“So, you were walking down the hall with him?” asked KHOU-TV reporter Matt Musil. “Weren’t you scared?”

“In the moment I wasn’t,” replied Miednik, “because there was obviously…definitely another shooter involved.”

“Oh, you think he was not the only one?” asked Musil.

“No, definitely not,” replied Miednik.

“Why do you say that?” the reporter asked.

“Because when shots were fired, I saw him after the fact. The shots were coming from the other part of the building. So, there definitely had to be two shooters involved,” she went on to speculate.

Article found here: http://theantimedia.org/florida-high-school-student-alexa-miednik-nikolas-cruz/