Is Margaret really any better than Lucy? She ridicules the other woman's sexual allure, tries to use federal law enforcement to convey her displeasure at not getting what she wanted from Nucky, stole lingerie from a store and is raising her children so that they will likely have a number of different "uncles".

"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming

Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.