DEAR ABBY: I'm a contented, widowed, retired elementary-school teacher. I live in the same condo complex as my fraternal twin sister and her seventh husband. She has always been a cougar — never satisfied with what she has. She's attractive and looks 15 years younger than her age.
For almost a year she has been pen pals with a handsome man 30 years her junior. They exchange naughty nude photos and have phone sex. She likes the fantasy, but he wants it to become reality by flying across country for a long, steamy weekend. I worry for her safety. She says she can handle it. What should I do, if anything?