Fighting kids

Andrea is upset that Lacie won't play the game her way. I mentioned it's possible that Lacie needs to have some say in the game or it isn't any fun for her. Andrea's reply:
"Yeah, well, she didn't even pick the game!"
...
Kinda my point, kid.

The scene continues with Andrea chiding Lacie, "You get what you get and you don't throw a fit."
Lacie answers, "You get what you get and you don't throw a fit? I don't like that game."

I try to separate them into different rooms. Lacie doesn't want to be in the bedroom, she wants to play in the living room. Andrea doesn't want to be in the toy room, she wants to be in the kitchen. The kitchen and living room connect, and the girls are still visible to each other. Obviously a problem.

Later...
Andrea: "Hey Lacie, maybe we can play together but not fight."
Lacie: "Ummm, no."

Now they're arguing over whose cup has more eggnog.
And now over the movie selection.

I'd ask if this ever ends, but after looking down at my legs and seeing my own childhood battle-scars (ahem, Lexye), I realize what a dumb question that is.