From a true psycological observation... Joanna is a loose cannon and doesn't know how to keep her emotions in check.. Joanna walked on the show thinking she was queen bee and received a reality check from Miss A... Anyone and I mean anyone in Adriana's position would have done exactly what she did or worse!
Ever since Romain tried to make Joanna jealous by telling her Adriana flirted with him, Joanna has had a death ray on Adriana.. Joanna used Karent's fued with Adriana to attack her and Joanna looked so pathetic it was hard for me to watch.
Instead of saying ok ok I messed up, Joanna keeps defending her actions which make her look even more pathetic.
Adriana is beautiful, smart, incredibly talented and has a great life... What could she possibly be jealous of? Joanna is already past the modeling age and her career is in the toilet (hence dancing with the stars).. Adriana can keep her thriving career until her pretty little independance decides on her own to retire!!!!!
Too bad for Joanna that she has to latch onto sucessful Romain who cheates on her regularly beacuse she can't make it on her own.