I copied and pasted that part here,
McCormick "joked" in her memoir "Heres the Story" that she and her on-screen sister had a lesbian affair while working together, which is rumored to be the basis for why they arent on talking terms as Plumb was less-than-impressed with the confession. Although it sounds as though McCormick is ready to reconcile.
I'm sorry, you don't "joke" about something like that and then wonder why someone isn't talking to you??????