<P> In the final episode of the season, Lola signs over her entire half of Cece's estate to Ivy and asks her to do one favor in return: Take Lily down in revenge for Carol's imprisonment and her manipulation of events . Ivy accepts, more than happy to help after her rejection . </P> <P> Ivy looks in on Rufus after Lilly annuls their marriage and the two soon become lovers . However, Ivy is actually sleeping with Lilly's ex-husband William and using Bart in a plot to take down Lilly . When Rufus sees the two kissing (although not seeing William's face), he breaks up with Ivy . Ivy helps Blair in her plans to try and take down Chuck's father and when the man dies, she believes it's finally time she and William come out in public as a couple . However, when she meets William, he is with Lilly and claims to have never met Ivy before . Ivy tries to tell Lilly of their relationship but Lilly doesn't believe her . After Lilly leaves, William informs Ivy he was using her all along to break up Lilly and Rufus so he could finally have Lilly to himself . He coldly informs Ivy nobody wants her around and she should just take her money and leave . In the final scene (set five years later) Ivy has written a book about her experiences that's being made into a movie . </P> <P> The critical reception of the character had been positive until the start of Season 5 . During the series fourth season, Charlie became the subject of praise with her successful integration into the Upper East Side . TV Fanatic praised and welcomed her presence on the show . In the episode The Princesses and the Frog, Steve Marsi praised her choice of confronting Vanessa alone, calling her "a natural" at schemes and that "even an outsider can thoroughly outshine an outcast ." TV Guide praised the ousting of Vanessa by Charlie, stating that "it didn't take her long to cross over to "the other side" ". </P> <P> Beginning in the fifth season, however, her character began to receive less than favorable reviews . NY Mag and The Baltimore Sun referred to the Charlie / Ivy plot as "ridiculous". The Wall Street Journal suggested that the storyline was repetitive, baring too much of a resemblance to the Juliet and Vanessa plot in the previous season . Sharon Tharp of Ology wrote that the Charlie / Ivy plot was predictable and earned "too much screentime". </P>

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