As part of the coronavirus lockdown imposed in March, all social events were stopped, including weddings.
People are asking the government to allow register offices to conduct legal formalities via video call.
The Duke and Duchess of Sussex got married at Windsor Castle in May 2018.
Kim-Marie Gerrard and partner Mark Tooth had abandoned their nuptials because of the lockdown.
The nurse says the timely find will help give her "strength and positivity" while treating patients for coronavirus.
The Duchess of Cambridge's sibling and his girlfriend Alizee Thevenet have decided it is no longer "practical" to marry this spring.