Getting financed on 2nd property

[Dayton Rhoten]

I currently have owned my first duplex for 1 year 1 month on an FHA loan and am getting married in April. My second one will be purchased by myself and my fiancee and I'm running into being unable to finance the next one with a 5% down or lower because my bank is telling me that it doesn't fall under the correct guidelines because it is a duplex. How can I help her buy this since i already have an FHA and have about 5% for our next investment?