The House of Mirth
Eventually, Lily Bart receives a ten-thousand-dollar inheritance from her Aunt Peniston, which she arranges to use to repay Gus Trenor. Distraught by her misfortunes, Lily has by this time begun regularly using a sleeping draught of chloral hydrate to escape the pain of poverty and social ostracism. Once she has repaid all her debts, Lily takes an overdose of the sleeping draught and dies; perhaps it is suicide, perhaps an accident. That very morning, Lawrence Selden arrives to her quarters, to finally propose marriage, but finds Lily Bart dead. Among her belongings are receipts for her payments toward the debt she owed to Gus Trenor, proving that her financial dealings with Trenor were honorable and not evidence of an improper relationship. His realization allows him to feel sympathy and closeness for her, and he is clearly distraught by her death.
Lily Aldrin
The series finale, "Last Forever", reveals that, a few years later, Lily gives birth to a third child, a baby girl whose name is unknown. Even as the group drifts apart over the years, Lily is there for all the important moments of their lives: Robin and Barney's divorce, the birth of Barney's daughter and that of Ted's two children, and Ted's wedding to The Mother (whose real name is Tracy McConnell). She remains happily married to Marshall, who eventually becomes a State Supreme Court judge.