updated 04/12/2012 AT 8:45 PM ET
•originally published 04/12/2012 AT 6:40 PM ET
Oh, mom, not again.
“While I’m generally silent on the affairs of my biological mother, her recent tirade has taken a gross turn,” says Frances. “I have never been approached by Dave Grohl in more than a platonic way. I’m in a monogamous relationship and very happy.”
Frances adds: “Twitter should ban my mother.”
Grohl, the Nirvana drummer who now leads the Foo Fighters, also criticized Cobain’s widow, who had Tweeted that Grohl was “sexually obsessed” with Cobain.