“My friend threatened to sue me for quoting her (but not naming her) in a short story. What can I do?”

My friend said, “If you write about me, I’ll sue you.” But, I’ve already published the book!
My friend said, “If you write about me, I’ll sue you.” But, I’ve already published the book!
Blogger gets sued for exposing police corruption; Chicago Tribune’s Spanish paper shut down; Broadcaster sued by Lt. Governor for defamation; Actress writer op-ed, doesn’t name names, still gets sued; and Can you libel a dead person?
Some authors are tempted to write what they want, and to hell with anyone who doesn’t like it.
MORE: Indie bookstores and industry leaders furious at Amazon for violating book embargo (if you don’t know what that is, read this!); If you get your morning paper in your undies, you probably do NOT want a free doorbell from Amazon; MSNBC sued for outrageous allegation; “Almost Everything About Goodreads Is Broken;” Politician sues CBS and we’re betting that gets thrown out of court. And, DO NOT, UNDER ANY CIRCUMSTANCES, MISS THIS AWESOME OBITUARY!
MORE! Authors sue publisher over digital royalties; Cindi Lauper copyright infringement; and “Eco-Activist” book niche developing
MORE! Amazon drivers part of $10 million theft ring?; BIG newspaper merger; “Stairway To Heaven” lawsuit to continue; Suing repeatedly for copyright infringement after making your product easy to steal?; Sarah Palin’s defamation lawsuit revived by a court
MORE! Street artist sues Walmart, Ellen Degeneres; 1st Amendment protects Wikileaks and Facebook; Flaunt Magazine co-founder leaves; Charging for online newspaper prescriptions is not a good idea; Gawker lays off entire staff.
MORE: AOC Photo Sparks Copyright Lawsuit; Bee Gees estate sues SC bar over alleged copyright infringement
I’d really like to use their names, and surprise them with a copy of the book when it’s finished. What advice can you give me about this?
YouTube makes complaining about copyright infringement more difficult; Bankrupt Ebony selling off photos; Former prime minister threatens to sue newspaper after being linked to Jeffrey Epstein; Starbucks no longer offering newspapers – can you guess why?