Sorry about the immigration info in 1930. When I checked the blank form on Ancestry I failed to look at the lower half of the image.
If they were married in US in an arranged marriage or not they could have come ever as children in any year before 1927. If you are sure the marriage was arranged in Russia and they were married there then they probably came together in 1926-27. If she came alone to marry him then she came in 1926-27. That is my best guess. Teenage women rarely immigrated alone.