Why does Goucem steal the gun?

Goucem steals the gun. Her friend, who has not seemed very important to her in the past, gets killed as a result. Goucem is suddenly moved. So moved, that she goes and finds a goof on a bocce pitch whose sexuality she had previously questioned. Goucem's mother, a romantic chanteuse, dismisses Fifi, the dead girl, as a putain, but Goucem's mother, Papicha, is not far from Fifi at all.

Goucem's theft of the gun catalyzes a "plot" that is of dubious existence in the first place. Why does she steal the gun? Impulse? Did she enter the apartment looking for money? Does she plan to kill her no-good docteur monsieur who won't marry her? I don't have the scene right in front of me, but it seems to me Goucem had time to put the gun back, if she were surprised into it, but she doesn't; she very decidedly takes the gun and that leads to terrible consequences she, Goucem, apparently is upset about.

So I don't get it. Why does she take the gun? The movie just gets stupid from there on out. I think the director wanted to announce some vaguely political messages, but failed utterly on that count. So fall back on something vaguely romantic--empty there, too. I don't get it. As another commentator said, I, too, would like to like this film, but it is as yet unwritten, as far as I can tell.

ww