Yeah, I find it hard to believe that there was no inkling of what might be required. She's a smart cookie. But I also think marrying into the Firm would be overwhelming for anyone not raised to be 'royal'. The general acceptance of ennobled commoners marrying into the Royal Family is barely 100 years old, let alone people without any aristocratic background. Even Princess Margaret apparently held her own royal birth over her mother's head, who, though Queen Consort and the daughter of an Earl, was 'made' royal rather than 'born' royal. Ego upon ego upon ego.