[1][4] Undaunted when she lost everything in a fire, she found employment as a stewardess on the Pacific Coast Steamship Company ship S.S. City of Topeka plying its route from California to Alaska, earning extra money by selling necessities and luxuries to the passengers.

Instead of seeking her fortune as a prospector, Mulrooney bought supplies of "silk underwear, bolts of cotton cloth and hot water bottles"[1] with her savings of $5,000[3] and transported them over the Chilkoot Pass to Dawson City, where she sold them for six times that amount in June 1897.

[1] Mulrooney once partnered with fellow Klondike legend Alex McDonald to salvage the cargo from a small ship wrecked on a sand bar.

[6] On 1 October 1900, Mulrooney married self-styled "Count" Charles Eugene Carbonneau, who claimed to be a French aristocrat, but was actually a champagne salesman and former barber from Quebec.

In the TG4 series An Klondike, she was portrayed by Bríd Ní Neachtain and appears in the fictional town of Dominion Creek instead of Dawson City.