According to an insider who spoke to Heavy.com, Megan Thee Stallion argued with her friend Kelsey right before Tory Lanez fired bullets that ended up in Meg's feet

“It wasn’t Tory and Megan arguing in the car, it was Megan and Kelsey arguing because they found out that night that they were both sleeping with Tory when Megan got jealous over Kylie. That’s why they are no longer friends and had the big falling out. They almost came to blows in the car because everyone was drunk. It was a big mess.”

Prior to the blow up the threesome were at a pool party at Kylie Jenner's house, where Tory was allegedly flirting with the Kardashian.

The source claims that the DA won't prosecute Tory beyond the felony weapons charge he's already facing because Meg doesn't want a trial.

"Megan will 100% not show up at court to testify. That’s part of the reason the [District Attorney] hasn’t filed charges, they feel if she really wants them to prosecute [Lanez then] she has to be part of the trial. In order for any sworn statement to be valid or admissible in court she will have to show up in court and be cross examined which she doesn’t want to happen not only because she’d really be labeled a snitch by the hip hop community but everything else would come out including her version of events, her previous arrest for beating up her ex-boyfriend and what happened at Kylie’s house which is a bad look for her."

The influence of the Kardashian Klan is also apparently keeping Tory safe from more charges

All the witnesses at the pool party who have given statements say Meg got super jealous of Tory flirting with Kylie and flipped out. That being said, Kylie could be subpoenaed to show up in court to be a witness to what happened that night and Kylie’s people won’t let that happen and have a lot of influence with the Mayor of [Los Angeles]. Also the DA doesn’t want to bring it to court because they know they will lose the case based on the lack of evidence and contradictory statements. Also the neighbor/witness Megan talked about who called the police didn’t see anything, she just heard one gunshot and got a description of the car [and] that’s in the original police report. There is no video of the actual incident, that’s a lie.

The source also reports that the shooting wasn't intentional.

“Every insider to this situation knows it was an accident, not intentional. Megan wasn’t directly hit with a bullet, it was shards of bullet fragments from one shot that ricocheted.”