
You can read the article right here, also see a newsclip of her discussing this.
Basically, she overheard her two sons brashly boasting about a man they'd beaten up and left for dead. Realising that if it had been one of her own sons left for dead in a pool of his own blood, she'd want to know who did it, she'd want justice brought to bear. So she called the police and handed them both in; a heartbreaking, but right decision.
I hope when the Queen and the government get round to compiling their list for this year's honours and awards, that Carol is right at the very top of that list...you know, above the TV celebrity honoured for 40 years of light entertainment, or the premier league footballer's medal for gallantry, or the retired MP's knighhood, or the BBC weather girl who's boosted her showbiz profile by campaigning against landmines.