As a Franchise Attorney I can say the following. As long as there is full disclosure and consent, there is likely no issue with representing both the business and family. But more specific details would be needed. I don't know what you mean by financing the missions. A loan or what? Consult with a good business or franchise attorney in your area for specific advice.
Mr. Franchise - Kevin B. Murphy, B.S., M.B.A., J.D.
Franchise Foundations, a Professional Corporation