Cosby, 79, is charged with three counts of felony aggravated indecent assault from a 2004 case involving Constand, formerly the women's basketball team manager at his alma mater.
Johnson said she didn't remember any precise details about Cosby giving her money.
His lawyers tried to poke holes in Constand's story, citing differences between her courtroom testimony and the accounts she gave to police and in a lawsuit in 2005. Popular reality TV personality Nene Leakes wrote on Facebook, "Do you think she did the right thing being there for him???"
We recently asked you to support our journalism. "I swallowed the pills down".
"The last words she heard before she lost consciousness was, 'I'm going to let you relax'".
Television critic Ellen Gray said on Philly.com that Pulliam's presence at the trial now blurs the line between Cosby and his TV persona, Cliff Huxtable.
Mr McMonagle said that phone records show the two spoke 72 times after mid-January - and two-thirds of the calls were initiated by Miss Constand.
"I felt like I was hurting him. I mean, "no" means "no" and I get that".
On the second day of the trial, prosecutors in Norristown, a suburb of Philadelphia, Johnson's mother, Patricia Sewell, said she was different after the attack.
Constand says Cosby gave her pills that left her paralyzed and then groped her. He tilted of while leaning forward to listen. He also said Johnson had a six-year relationship with Cosby despite a company ban on dating clients.
Earlier Tuesday, another prosecution witness, Pattrice Sewell, testified in support of her daughter's sexual-assault allegations against the entertainer.
That's how the mother of Kelly Johnson, one of comedian Bill Cosby's alleged victims, described her daughter's demeanor in 1996 after Cosby allegedly drugged and sexually assaulted her in a Bel Air hotel.
That fact could just as easily mean that a guilty verdict is on the horizon, but the shroud of doubt that will be cast by Cosby's defense with what little hard evidence the prosecution has is likely to see him go free.
His legal team said he had only offered Ms Constand Quaaludes - a sedative widely used recreationally in the USA in the 1970s - after she complained of having trouble sleeping. "It kind of reminded us of our own family".
Gloria Allred, the celebrity attorney who represents several of Cosby's accusers and showed up for the first day of the trial, told reporters she is hopeful "there will be justice in this case". "In a commentary headlined, "Why I wish "Rudy" had skipped Cosby's trial", Gray wrote, "[Pulliam's] presence, nearly certainly part of a well-planned public relations campaign on the part of the defense, also encourages us to conflate Cosby and Cliff, and what's good for one isn't so good for the other".
Johnson later gave a deposition about the interactions with Cosby in a workers' compensation claim about the incident at the hotel.
"I was bawling in that deposition and I didn't even really want to say - I didn't want to tell anything about what happened", Johnson said. "She didn't want to do that". Using notes from that workers' compensation deposition in 1996, he argued that her timeline had changed from that deposition to her testimony on Monday. And she blamed Cosby.
Assistant district attorney Stewart Ryan asked Johnson why she didn't speak out sooner.
"She couldn't say no", Feden said. "It's possible that we could see some of them at key moments during the case but I wouldn't expect to see them being a daily presence".
But Pulliam is not the first "Cosby Show" cast member to show support for the now tarnished star.
Sex crime defendants routinely resort to the cliché, "he said, she said", and Bill Cosby is no exception; the phrase was mentioned a couple of times Monday by his lawyers. His attorney, Brian McMonagle, denied these claims from the start.
Agrusa, however, was frustrated in her efforts to suggest that Johnson was sacked because of her own actions.
That line of questioning drew an angry objection from prosecutors.