Andromeda's story is one of bravery and fate. It often involves themes of heroism and the power of love. Different tellings might emphasize different aspects, but the core idea remains of a damsel in distress and a heroic intervention.
Well, it's hard to say for sure. If it's presented with solid evidence and documentation, it could be fact. But if it's full of imaginative and fantastical elements, it's likely fiction.