Wilma Tisch, the billionaire heiress and widow of former CBS Corp. CEO, Laurence Tisch, is suing a Florida gallery owner over a Picasso painting that she claims was stolen from her home. Tisch, who inherited Pablo Picasso’s La Penseuse from her late husband, says the painting has been missing since 2009. Tisch decided to pursue legal action after learning that the Florida dealer was trying to sell the painting in New York.