Crazy mom has a screamfest with children about who stole her son's knife, the one he pulled on them

Backstory- So y'know; Two little kids argue for little things. But one little kid thought it be great idea to go home and bring a knife. He comes, gets the knife, threatens the other kid and me and my friends helping him out, we run towards the kid and take the knife (Oops). This kid runs home and tells his mom that we took his knife. So she begins to argue at us where is the knife; she doesn't care about him holding the knife and threatening a kid his age with it! (Both of them are 10 yrs old FYI). She brings up this " He saw his dad get shot and he deserve to hold that knife for protection" Yeah.... She thinks it legal for his 10 year old son to hold a knife because of that...( I was the guy that began to shout at her in the brown-ish black-ish shirt with the watch. I'm also making this desc. :3)