If you are looking for a statutory death reg. post 1855, normally for married women deaths would be recorded under both the married and the maiden surnames which is a great bonus. In Scotland, by law, women never 'lost' their maiden name. This is the reason that maiden names feature so strongly on so many documents and registrations for married women...which is great for a researcher trying to find details on married women.
Before 1855, harder to say how the death or burial would have been recorded in the Old Parish Registers. There may be no details to be found, for all sorts of reasons.
Monica