Episode 9 dramatizes the negotiation of their divorce settlement, and portrays the process fairly accurately.
But it was not going to be easy.
Heres whats been confirmed.
Its likely that if Diana had remarried, she would have had to give up the yearly stipend.
Diana also gave up various military titles that came with her marriage.
Much like her yearly stipend, many of these luxuries would have likely been revoked had she remarried.
source: www.bustle.com