Transmigrated into a cannon fodder character who gives the female lead a cheat ability in a period novel

Transmigrated into a cannon fodder character who’s supposed to give the female lead a cheat code in a historical romance novel? No way! No way she’ll be cannon fodder! Her stepsister instigates her stepmother to send her to the countryside and steal her job? She sells her job and drags her stepsister to the countryside with her. The female lead takes a liking to her at first sight, wants to be her friend, and even wants to introduce her to her philandering husband from her past life? She’s not a garbage dump! Su Ying, possessing a cheat code, originally wanted to enjoy her life alone, but someone’s eight-pack abs are too attractive, and before she knows it, she’s hooked for life!