The Gilded Age: What Happened in Season 1? Finale Recap
Everything That Happened in "The Gilded Age" Season 1
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Ada, Agnes's sweet younger sister, spends much of the season acting as a buffer between Agnes and Marian. Early in the season, she briefly reconnects with an old flame from her youth, only for Agnes to send him packing after correctly pegging him as a gold digger. Ada also does her best to counsel Marian to be wise, especially in her relationship with Tom.
In the end, Ada is the one who figures out that Marian plans to elope with Tom, and she tries to point out the flaws in the plan. When Marian winds up heartbroken, Ada does her best to support her niece and help her move forward.