Why do women need to fill seven wells?

The fortune teller said that if you commit 7 pounds water, you should commit seven wells.

In some ancient places, every family would dig a well in the yard. One well per household. Therefore, a well represents a family.

The female killer weighs seven kilograms (seven wells) of water, which means that judging from the fate of this woman, she has a polygamous life. Doesn't mean this woman has to get married seven times.