My Princess Is Too Weak to Take Care of Herself

In her last life, she was betrayed by both her husband and her cousin, and even her child died tragically in her belly! In this life, in order not to make the same mistakes again, she began to plot every step of the way, fighting against aunts, sisters, and scumbag men. But when she was busy fighting off monsters and monsters, why did the regent suddenly want to marry her, protect her, and pamper her? There was no such plot in the previous life!