The defense has argued that Cosby's infidelity to his wife made him "vulnerable" to accusations and has sought to undermine Constand's credibility, portraying their relationship as consensual, with many meetings and phone calls.
"She changed considerably", Sewell, her voice shaky, said of the psychological toll on her daughter.
About half an hour later, Constand said, she had trouble talking and difficulty moving and was suffering double vision.
She said she felt humiliated and confused, and wanted to go home, but doesn't remember what happened the next morning before leaving Cosby's home.
"You were sitting by the fire".
Constand has never spoken about her encounter with Cosby because the terms of the civil settlement she reached with him in 2006 barred either of them from doing so.
Cosby's lawyers said that when Constand spoke with Cheltenham Township, Pennsylvania, police by phone on January 19, 2005, she said the exact date of the incident was March 16 - a date she thought she had confirmed by contacting someone else who attended the Central High dinner.
Some 60 women have come forward to say Cosby sexually violated them, but the statute of limitations for prosecution had run out in almost every case.
While Constand had originally come forward in 2005 about the 2004 meeting at Cosby's Pennsylvania home, the Montgomery County district attorney did not seek charges, reportedly due to lack of evidence. Constand was the women's basketball team manager at Cosby's alma mater.More news: Shah seeks Sena support for presidential polls
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"The absence of Camille Cosby is noted, usually a person charged with a crime, their spouse comes to show support for them", said attorney Gloria Allred, who represents 33 Cosby accusers.
According to Johnson, a former assistant at the William Morris Agency, Cosby provided her with a pill that temporarily knocked her unconscious and then initiated nonconsensual sexual activity with her at the Bel-Air Hotel in 1996.
She said she took two sips of the tea, nibbled the top of the muffin and left.
Taking the stand, Constand recalled the assault that she said took place at Cosby's mansion in Elkins Park, Pennsylvania. "I don't want that".
"He looked at me and said, "I thought you had an orgasm, didn't you?'" she said".
Jurors at Bill Cosby's sexual assault trial are hearing from the Canadian police officer who initiated the original investigation into allegations the entertainer drugged and violated a woman in 2004.
"I had a secret about the biggest celebrity in the world at that time, and it was just me", Johnson said. She said on Tuesday that she felt her continued friendship with Cosby after the alleged assault was important to the school's athletic department. She awoke in bed next to Mr Cosby, her clothes undone, it is claimed.
A woman has told a court she was "frozen" during an alleged sex attack by Bill Cosby. "And so, I just went along with it".
Agrusa contended that the advances Cosby made on Constand on two occasions - touching her thigh one time, and attempting to unbutton her trousers and pull down her zipper another - signaled his romantic interest.
Cosby is charged with three counts of aggravated indecent assault. Mr Miller testified that she told him the assault occurred in 1990. Cosby told her the pills would help her relax, take the edge off.
"I felt Mr. Cosby's hand groping my breasts under my shirt".