I've prepared the translation for the passage you provided. Here's an accurate and natural translation of this part of Cursed Villainess’ Obsession:

She had already died six times at the hands of that woman.

And two of those deaths were so agonizing that she wished she could forget them forever.

The woman would cut the thin parts, slice through the thicker ones, and slowly, ever so slowly, pull out her innards.

Slowly.

Deliberately, as if savoring every moment of pain.

She would relish Emily’s screams.

Enjoy the expressions twisted in agony.

And with that, she would rejoice, taking pleasure in …