Exactly right. I think she perceives two potential problems:
1) mobs in Baltimore on her way to or from work and
2) mobs moving into their nice suburban tract.
I agree that a gun is not necessarily the solution to either problem. You might shoot one of the mob trying to drag you from your car, but they would be so hopped-up at losing one of their own they would probably beat you to death. You are probably better off trying to drive out of the mob situation.
And, for #2, the mobs won't always back off like they did for the McCloskeys in St. Louis. Normally, when you kill the leaders, the rest of the mob will back off, but I'm not sure that will work for these BLM mobs. Drop a couple of them in the front and the rest will attack you like a pile of zombies.
I don’t know, every time I have seen mobs surround a car and then shots fired, they scatter like quail, giving you enough time to speed off.