However, her exit is not thought to have been linked directly to performance, and sources told Drapers she had opted to leave after the departure of Ossian Retail chief executive Norrie Stewart last week.
Mark Evans, who worked in retail operations at Internaçionale, has replaced Scanlan as managing director of the chain.
Stewart worked at the company for more than a decade and led a £45 million management buyout of the business last year.
Operations director Gerard Gavan and logistics director Graham Clements were both part of the buyout team, but also left the business this autumn.
Ossian retail chairman David Brock would not comment on the changes. No one at Penta Capital was available for comment.