Lena Dunham, the creator, producer and star of HBO's "Girls," is angry that Bradford Thomas, a writer for the politically conservative website Truth Revolt, and Kevin D. Williamson, a columnist for the news magazine National Review, have accused her of confessing to sexually abusing her younger sister, Grace Dunham, in the passages of her memoir, reports E! Online.

"Not That Kind of Girl," Dunham's memoir released in September, contains two sections that detail early sexual encounters with Grace:

1. Dunham wrote of masturbating in bed next to Grace and bribing her with "three pieces of candy if I could kiss her on the lips for five seconds ... anything a sexual predator might do to woo a small suburban girl I was trying."

2. Dunham describes a moment when she and Grace played in the family's Long Island driveway as children and curiosity caused her to look at Grace's vagina. She discovered pebbles Grace had apparently stuck there and "shrieked." Their mother came running.

"My mother didn't bother asking why I had opened Grace's vagina," Dunham, 28, wrote. "This was within the spectrum of things I did. She just got on her knees and looked for herself. It quickly became apparent that Grace had stuffed six or seven pebbles in there. My mother removed them patiently while Grace cackled, thrilled that her prank had been a success."

Dunham was especially angry at Williamson, who described what she wrote as "sexual abuse," adding it's "the sort of thing that gets children taken away from non-millionaire families without Andover pedigrees and Manhattanite social connections," reports USA Today.

Over the weekend, the two stories went viral on social media. Dunham used Twitter to refute the accusations, tweeting, "The right wing news story that I molested my little sister isn't just LOL- it's really (expletive) upsetting and disgusting."

She also wrote, "And by the way, if you were a little kid and never looked at another little kid's vagina, well, congrats to you."

In addition to being to creating, writing and starring in "Girls," Dunham wrote and directed the independent film "Tiny Furniture."