Frances Bean Cobain, the only daughter of late Nirvana frontman Kurt Cobain, is not happy with her mother Courtney Love's latest Twitter rant. "While I'm generally silent on the affairs of my biological mother, her recent tirade has taken a gross turn," Frances told People.

Love had tweeted speculation that Cobain's former bandmate and current Foo Fighters frontman Dave Grohl, 43, had tried to seduce Frances, 19. "I hear from frannies roommate that [Grohl] hit on frances, and that she was curious, I'm not mad at her, him i am about to shoot, dead," Love wrote on her private Twitter account, @cbabymichelle, according to Gawker. In several following tweets, Love went on to say that Grohl is "sexually obsessed w kurt" and called him "a gross old man macking on kurt cobains only child."

Grohl, the married father of two daughters, said Love is being ridiculous. "Unfortunately Courtney is on another hateful Twitter rant," Grohl's rep told E!. "These new accusations are upsetting, offensive and absolutely untrue."

Frances, who is currently engaged to Rambles rocker Isaiah Silva, agreed that these so-called rumors are totally unfounded. "I have never been approached by Dave Grohl in more than a platonic way. I'm in a monogamous relationship and very happy." She added: "Twitter should ban my mother."