I find the tale of a jealous sister and her way of avenging her sister Anna quite gripping. The fact that the whole story unfolds through dialog is quite fascinating. All the characters come through clearly and details surrounding their lives make us understand each of them. Anna, the one who couldn't wait to seduce the sister's betrothed, and later was shunned and condemned by not only her family but also by the very man whom she desired, is pitched against an avenging sister. Married but had to bring up her sister's kid and later played the vamp by poisoning Anna. Guilt sat heavy on her mind and paid the price for killing her.
Author's skill of telling and showing the story is interesting. Dialog is effective, for it shows the meandering paths of a mentally damaged person who also suffers from amnesia(?). She is blissfully living in a world of mixed realities and memory loss. However, the grand daughter cum care giver gets all the facts by knocking at that door which opens to let the murky details out.

Style is effective and the flow dialog is natural.

Write on!