Judging by the enthusiasm with which the young ladies crushed the works of the artist, the basis is not the desire to punish a potentially unfaithful husband, but envy of the one who had a happy family, and the desire to destroy everything.
The film seems to lack a sequel. A live witness, a video on the web, fingerprints left all over the place, and a mean dog-- enough to find a young lady? Then, of course, there will be some heartwarming backstory about a man who lived in two families, where these girls were just daughters, and that they went crazy, finally getting to know each other, and not being able to decide whose daddy it should be. And there must be a happy ending, in which the ladies sit in a psychiatric hospital in one ward and play mother-daughter to the delight of the orderlies.