It's hard to say for sure. It depends on how it was written and presented. Maybe the author drew inspiration from real life but changed some details for the sake of the story.
Hard to say for sure. It might be based on a real incident that was then embellished or fictionalized to make it more engaging. Without further information, it's difficult to determine its authenticity completely.
It depends on how you define 'good'. Some might think Megan is good based on her actions and intentions, while others might have a different perspective.
Hard to say. Sometimes stories are inspired by real events but with fictional elements added. So, it's difficult to determine if Megan is purely based on a true story or not.