Lifetime’s final installment in the “Flowers in the Attic” franchise was one emotional roller coaster. “Seeds of Yesterday” premiered Sunday night and finished the tale of the Dollanganger siblings-turned-lovers. The Lifetime adaptation of V.C. Andrews’ 1984 book piled on the drama -- from Jory’s (Anthony Konechny) accident to Bart’s (James Maslow) seduction of his brother’s pregnant wife. Although the movie had somewhat of a happy ending, viewers discovered in the end that Cathy (Rachael Carpani) couldn’t escape her past.

“It’s almost come full circle,” Carpani dished to International Business Times about her character.

The Australian actress didn’t play the role of Cathy Dollanganger from the start of the “Flowers in the Attic” series, but she did portray the character in the past two movies, “If There Be Thorns” and “Seeds of Yesterday.” In both films, fans watched as Cathy dropped her desire for revenge and instead accepted her life of “sin” with her brother. With Christopher (Jason Lewis) at her side, she was finally able to live out her fantasy life with him as husband and wife in the “perfect” family. But as viewers discovered, their family was far from perfect. Despite Cathy’s attempts to protect her children from the troubles of her past, the Dollanganger family history eventually consumed everyone in “Seeds of Yesterday” -- including Cathy.

“I’ve become my worst nightmare,” Carpani explained of Cathy’s transformation. “I’ve become Corrine [Heather Graham]. I’ve become my mother.”

For Carpani, the character really flipped a switch after Melodie’s (Leah Gibson) betrayal of Jory. However, she believes the real turn for Cathy came after the disturbing confrontation with Bart in the chapel. The scene found Bart holding a knife to his mother’s throat while forcing her to choose between him or Chris. When Cathy chose her husband/brother over her son, Bart threatened to kill her in order to stop the “source of all that’s evil in this family.” Jory managed to prevent his brother from following through on his threat, but Cathy wouldn’t let him hurt Bart. Instead she walked away from her youngest son and his desperate pleas.

“[Cathy] does display that fierceness of her grandmother, which I liked,” Carpani added. “Because she has been sort of a victim. A victim of her grandmother and mother’s actions. So I kind of liked that full circle.”

“Seeds of Yesterday” also came full circle in that Cathy lost Christopher in an accident -- just like Corrine lost her husband at the start of “Flowers in the Attic.” Cathy’s children were older than she was when her father died, but like Corrine she couldn’t move forward without her love by her side.

“She does kind of fade away like a little flower,” Carpani added of the movie’s ending. “She does come to accept that she [became] Corrine.”