It was very noisy on the road; the cars were blaring and the people were blaring and trucks were squeaking and all she wanted was that everyone should shut the hell up, so she tried mind control.
She used her mind to make all the noise stop.
And then suddenly it did, so she was very happy.
She sat in her little bubble of no sound being happy that she had made everyone shut up, till she noticed that the taxi driver's mouth was opening and closing like a goldfish, but a very urgent goldfish. And when she looked around people were pushing horns anyway, and her phone was still blinking.
So she told her grandchildren to be careful what they wished for, and watched them open and close their mouths at her.