In her first live interview with CNN's Piers Morgan, Sharon Bialek said Monday night that money was not the motive behind her going public to accuse Herman Cain of groping her in 1997. It was because she wants her son to know that she stood up for what she believed in, and to encourage women in similar situations to speak out, she said.

Bialek was asked about the effect the accusation could have on her teenage son. He's the love of my life. I want him to know that his mommy did something good for women, that she stood up for what she believed in, and I think that's a more important lesson to learn, she said.

In a press conference Monday, Bialek went public with her claims and accused the Republican presidential candidate of being aggressive and behaving in a sexually inappropriate manner with her.

She called on Cain for an apology. Attorney Gloria Allred, who sat by Bialek's side for the show, branded Cain a serial sexual harasser.

Cain has denied all accusations of sexual harassment, and his campaign put out a fresh denial after Bialek made her accusations on Monday. He said he would address Bialek's charges in a news conference Tuesday.