lisa mcelroy , 50 , who teaches legal writing at drexel university , reportedly sent the ` inappropriate ' message on march 31 .
when recipients clicked the enclosed link , they were allegedly directed to a video of ` a woman engaging in a sexually explicit act '
mcelroy appeared on the popular game show in 2010 with then-host meredith vieira but lost the game after reaching just $ 12,500 .
along with teaching law , mcelroy is also an accomplished author with a number of published biographies and children 's books .
has been placed on leave while school investigates .