Plus, a source says Diana Bianchi apologized to Brinkley's daughter Alexa for the "pain" she caused

By Sharon Cotliar and Kathy Ehrich Dowd
Updated July 03, 2008 06:20 PM

Although her divorce trial from Peter Cook is getting increasingly ugly, Christie Brinkley is making peace with her husband s former teenage mistress.

After a long day on the witness stand, Brinkley told reporters she wanted to let Diana Bianchi, 21, know that she forgives her.

“I’d just like to say after two days of testimony that I can’t help but think about Diana Bianchi, and I want her and her family to know that I feel really badly for them,” said Brinkley. “I feel bad for her and I forgive her completely.”

“She was manipulated.”

A source says that on Wednesday, Bianchi approached Brinkley’s daughter Alexa Joel, 20, outside the courtroom and apologized.

“Diana said, ‘I am sorry for the pain I have caused you and your family,'” says the source. “Alexa then hugged her and said, ‘We have all been through a lot.'”

Brinkley also added of Thursday’s testimony, “today was really difficult reliving all the horrors (of what happened two years ago).”

The trial is expected to resume Monday and the focus will shift to the issue of custody of the couple’s two children, Sailor, 10, and Jack, 13. Both Brinkley and Cook are seeking sole custody.

The children are not expected to testify.

Christie s Heartbreak: Read PEOPLE magazine s article about how Christie Brinkley was blindsided by her husband’s shocking affair with a teenager