Margaux Needler is a deluded and insane reality home developer who prefers uniformity and dislikes anything different.
Margaux is unaware of the fact she's insane (though the Addamses are quick to pick up on the fact she is deranged). Despite being guilty of numerous crimes such as using other peoples' identities online, illegally putting cameras in houses without concern for privacy, child neglect, destruction of private property, and attempted murder, Margaux isn't arrested, but instead starts a relationship with Fester.
As the Addams lived in their home long before she ever built Assimilation, Margaux actually has no legal right to do anything about how they live (as it's not part of her town). At most, she can only ever forbid them from entering the town.
- The Addams Family (2019)