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I Don't know if this information will be of any help or not, but I thought I would reply. While searching through ship passenger lists, I found a Susanna Doriot that is the same age as the Suzanne Doriot you are looking for. She is also listed as being from France.
Her name is found on the passenger list of the ship "Eliz. Denison." This ship sailed from Harve, France and landed in the port of New York on May 3rd, 1851. Susanna is listed as being a 19 years old female from France.
Other Doriots traveling with her are Frederic, age 19, Georg, age 26, Louisa, age 24,and Louisa, age 4.
I hope this helps you out in some way