Parents gonna parent.
It's not right or fair, but it is quite common for a parent to treat their children's concerns as less important, even when the concern is literally the same.
Next time around I'd imitate her approach, yell STOP! I don't like that noise and make that discussion/fight take focus over whatever she was originally trying to discuss.
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The Party told you to reject the evidence of your eyes and ears. It was their final, most essential command.
If you're not careful, the newspapers will have you hating the people who are being oppressed, and loving the people who are doing the oppressing. —Malcolm X
There’s class warfare, all right, but it’s my class, the rich class, that’s making war, and we’re winning. — Warren Buffett