Downtown Abbey AU that would be awesome

Talking about Downtown Abbey with my mother this morning (we're about 3/4 through Season 2), I remembered that in Season 1 there's a scene where Cora and the Dowager are talking about Mary; Cora suggests sending Mary off to her relative (an aunt?) in New York City to find a husband but Maggie Smith shoots it down. I think that episode takes place in 1913 or early 1914. It popped into my head and now I want an AU were Mary goes off to New York with her family's intention of getting married but she ends up having adventures instead. Want!

(May end up writing it myself if I can do the research and have confidence in writing about early 20th century NYC.)