Because she read Alison's old diary and discovered all of the Pretty Little Liars's secrets and information. Plus, she's evil and she wanted to haunt and scare the PLL.
Mona is an Italian contraction of ma donna, "my lady". The sitter's identity is up for debate, but in his biography of Leonardo, Giorgio Vasari asserted she was Lisa di Antonio Maria Gherardini,...
Mona Lisa is a famous painting of a sitting woman by Leonardo Da Vinci. Mona Lisa is named for Lisa del Giocondo, a member of the Gherardini family of Florence and Tuscany, Italy and the wife of...