Angelina Jolie struggled to play her pal Mariane Pearl in new movie A Mighty Heart - because she worried the French writer would hate her portrayal. The actress befriended murdered journalist Daniel Pearl's widow long before she decided to play her on the big screen and feared she'd turn her pal against her when she took on the role. Jolie reveals, "I was so nervous. I mean, it's like you're in roomful of your closest friends and somebody says, 'Why don't you get up and imitate the friend to your left?'" In a new Glamour magazine interview with both Jolie and Pearl, the actress admits, "I tried to get you right - your hair and that accent that changes all the time." Jolie adds, "Much more than how Mariane looks or acts, I wanted to express her essence. I've come to respect her so much."