When she woke up the next day, she claims her nylon stockings were "completely tore up".
Ruehli claims she ended up in a bed next to his swimming pool and insists he must have drugged her - because two bourbons would not have "knocked her out" when she was that age.
At one point, she came to, she told the magazine that he had his shirt off on top of her while her pants were unzipped. "He was attempting to force me into oral sex. He had his hand on my head," she added.
Ruehli then fully woke up, managed to get away and then was very sick. After the alleged encounter she never saw the star again, and every time she saw Cosby on TV she thought to herself: "This isn't the good guy that he's portrayed to be."
The grandmother-of-eight, who now spends her spare time skiing, says she decided to come forward when Andrea Constand's lawsuit was announced and she was branded "a liar". She became one of the Jane Does in the lawsuit that was eventually settled, a part which Constand's lawyer thanked her for.
Kristina Ruehli: "[Bill Cosby] isn't the good guy he's portrayed to be." Photo / Google Plus
Lawyers for Cosby have dismissed all the claims as untrue while the star has refused to make any comment.
Cosby's attorney, Martin Singer, has released a statement calling recent rape allegations "increasingly ridiculous" and "completely illogical".
"This situation is an unprecedented example of the media's breakneck rush to run stories without any corroboration or adherence to traditional journalistic standards," says Singer.
"Over and over again, we have refuted these new unsubstantiated stories with documentary evidence, only to have a new uncorroborated story crop up out of the woodwork. When will it end?"
He then closes by saying: "It is long past time for this media vilification of Mr Cosby to stop."
The comedian, who has been performing on staged despite the resurgence of allegations, stayed silent during a radio interview with NPR and pressured the Associated Press not to broadcast an interview where he was asked about the rape allegations.
The comic was given two standing ovations when he appeared before an enthusiastic audience in Melbourne, Florida, on Friday night.
He was cheered as he walked on the stage and later when he completed his 90-minute performance.
Many in the audience even shouted for an encore at the end of the show, but Cosby did not reappear.
On the same day Law & Order: SVU star Michelle Hurd came forward to say that Cosby acted highly inappropriately towards her when she was a stand-in on The Cosby Show, and claimed that she knows of one woman on set who woke up drugged at his apartment.
Ten women have come forward in the last month saying they were attacked by Cosby, with Renita Chaney Hill, Louisa Moritz and Andrea Leslie the latest additions.
Four of the women claim they were teenagers at the time.
One of the accusers is supermodel Janice Dickinson, who claims that during a dinner in 1982 the actor gave her a pill and when she woke up he was on top of her.
Another four ladies; Barbara Bowman, Joan Tarshis, Tamara Green and Therese Serignese have all shared remarkably similar stories in which they claim to have shared a drink or a pill with Cosby and then woken up after or while they say he was sexually assaulting them.
Also coming forward recently is Carla Ferrigno, wife of Incredible Hulk star Lou Ferrigno, who says Cosby tried to sexually assault her during a gathering at his house in 1967.
THE WOMEN WHO SAY THEY WERE ATTACKED BY BILL COSBY
Andrea Constand - A Temple University employee, she claimed in 2006 that Cosby drugged and sexually assaulted her in his Philadelphia-area mansion two years earlier. Cosby eventually settled this suit out of court as the prosecution said they had 13 Jane Does who would testify Cosby did the same to them in the past.
Barbara Bowman - Bowman told MailOnline that Cosby raped and drugged her back in 1985 when she was a 17-year-old aspiring actress. Bowman was one of the 13 Jane Does in the 2006 trial against Cosby.
Joan Tarshis - Tarshis claimed that she was just 19-years-old when Cosby drugged and raped her twice in Hollywood back in 1969 while she was working as a writer for him.
Janice Dickinson - The supermodel said in an interview that Cosby asked her to come to Lake Tahoe and talk about a television role in 1982, but ended up drugging and raping her.
Tamara Green - Green, who first came forward in 2005 told MailOnline that she was an aspiring actress in the 1970s when Cosby gave her pills and pretended to care for her while she had the flu, but instead sexually assaulted her.
Therese Serignese - Also one of the 13 Jane Does, she says she was 19 when Cosby drugged and raped her in Las Vegas after one of his shows.
Louisa Moritz - She accused Cosby of sexual assault, saying he once forced her into oral sex, backstage at The Tonight Show Starring Johnny Carson in 1971, and implied he would further her career if she went through with it.
Linda Joy Traitz - She said earlier this week that she was just 19 when Cosby drove her out to a beach and tried to get her to take pills to relax, before becoming "sexually aggressive". Traitz, of Hallandale Beach, Florida, has been charged in the past with trafficking pills. Cosby's attorney, Marty Singer, is trying to use Traitz's past to discredit her claims against his client.
Beth Ferrier - Beth Ferrier claims she had relationship with Cosby in the mid-1980s. She claims that she awoke in her car with her clothes in disarray and not remembering what had happened. Ferrier has claimed that he drugged her coffee.
Carla Ferrigno - The wife of Incredible Hulk star Lou Ferrigno, claims Cosby tried to sexually assault her during a gathering at his house in 1967. What's more, Cosby allegedly tried to use a friend to help court Ferrigno, and allegedly made his move on the former Playboy Bunny just moments after his own wife, Camille, left the room.
Angela Leslie - The former model-actress claims that Cosby forced her to masturbate him in his Vegas hotel suite after giving her a strong drink in 1992.
Renita Chainey Hill - The 47-year-old mother-of-three who met Cosby when she was offered a role on Picture Pages in Pittsburgh claimed he would fly her to different cities around the United States and drug her during a four-year relationship.
Kristina Ruehli - A New Hampshire grandmother-of-eight, now 71, claims Cosby invited her back to his house for "party". She arrived and no one was there. Ruehli alleges that he drugged two bourbons he poured her and she came to when he was on top of her, shirtless.
