Best friends transmigrated into the roles of mother-in-law and daughter-in-law? This script is wrong

Arrogant CEO with a deep affection x Stubborn and clear-headed female lead | Best friends bickering | Sweet romance | Happy Ending
Upon waking up, Qiao Manman and her best friend Jiang Shu both transmigrated into a book and became mortal enemies by chance. Jiang Shu became Qiao Manman's stepmother, and Qiao Manman became her stepdaughter.
Unaware of each other's true identities, the two women waged a silent war for self-preservation, with the stepmother and stepdaughter battling it out day and night, creating chaos and disorder.
Jiang Shu grabbed Qiao Manman's hair and shouted angrily, "Do you think you can just touch my handsome son like that?!"
Qiao Manman used her foot to push against Jiang Shu's chin: "You sleep with my dad, so what if I sleep with your son?!"
Jiang Tingyan, whose virginity was taken by Qiao Manman, was denied by Qiao Manman.
When I heard those words again, I could no longer tolerate it.
Enraged, he cornered Qiao Manman in the car and yelled, "Did you despise me, or did you start something and then abandon me?"
"Qiao Manman, am I just the trigger for your conflict with my mother?!"