With the upcoming premier of the HBO documentary Sinatra: All or Nothing at All, the crooner’s daughter is faced with controversies of Ronan Farrow possibly being one of Sinatra’s children. In an interview with CBS News, however, Nancy Sinatra denied the story and dismissed the rumors as ‘nonsense.’

Nancy said that she thinks Farrow was just making a joke out of her son’s striking resemblance with the late singer Frank Sinatra, but his daughter wasn’t amused. She refused to take the issue lightly because it was already affecting her children. She also revealed that she felt ‘cranky’ with her former step mother for her bad humor.

.@NancySinatra opens up about the Frank Sinatra paternity rumors. http://t.co/JVMwikqw6s pic.twitter.com/v8I9znUjfn

— EntertainmentTonight (@etnow) April 3, 2015

“We didn’t laugh it off because it was affecting my kids, you know. They were being questioned about it and we all knew it was nonsense,” Nancy told CBS. “I was kind of cranky with Mia for even saying, ‘Possibly.’ I was cranky with her for saying that because she knew better, you know, she really did. But she was making a joke! And it was taken very serious and was just silly, stupid.”

Nancy Sinatra addresses the Ronan Farrow paternity rumor–is the late Frank Sinatra his dad? http://t.co/EnH5wII1iT pic.twitter.com/VCWeUXIHsA

— E! Online (@eonline) April 2, 2015

The rumors started way back in 2013 when Mia Farrow was interviewed by Vanity Fair. When the article was published, the media went wild but Farrow’s son, Ronan, addressed the issue comically. On his Twitter account, he posted, “Listen, we’re all possibly Frank Sinatra’s son.” Perhaps humor runs in the blood.

Despite feeling ‘cranky’ with Mia, Nancy recalled how well she and her sister Tina loved their former step mother. “Mia was one of our… like a sister and we had a good time, Tina and Mia and I did,” she said.

Nancy also shared some of her thoughts when the crooner married Mia in the ‘60s. “Daddy said, ‘I’m not sure it’s gonna last very long. A couple of years, maybe,’ he said. ‘But I feel like I have to do this.’ We said, ‘Great. She’s a great girl.’ And I think the truth be told, I think he didn’t want her to be suffering because of him and she was being, her name was being bandied about in the press and there were paparazzi everywhere… I think it was very important to him that she be presented as a lady and not be thought of as something other than just that,” Nancy explained.

Nancy is Frank’s daughter with his first wife Nancy Barbado. She is now 74 years old.