The daughter would have to have first been baptized, and the marriage would have to have been announced at three Liturgies prior to the wedding taking place. So a minimum of three days would have had to have passed. But normally, someone of another faith would not be baptized without having first having a period of instruction in the faith. So it is unlikely, unless she was being instructed in secret, that this would have happened in less than several months at a minimum.

Service Book of the Holy Orthodox-Catholic Apostolic (Greco-Russian) Church, trans. Isabell Florence Hapgood (Boston and New York: Houghton, Mifflin and Company, 1906), p 467-469. http://fortsmithorthodox.org/Hapgood%20Service%20Book.pdf