After the On-Screen Comments Awaken, I Flee with My Senior Sister

Chu Yu used to be the sect's scheming little junior sister, repeatedly framing her senior sister. But by a twist of fate, she awakened a barrage-comment System and learned from the spoilers that the ones who had been plotting against her all along were the senior brother and master she had revered for years. They would even go so far as to get her killed, rip out her spiritual root, and strip away her immortal bones. It was her senior sister who caught her, battered and bruised.

In that case, she'd better run away with her senior sister before any of it happened.

A heroine who grows stronger over time, and sisters helping each other.