Well, 'Girl Boss' is purely fictional. The plot and characters were made up by the writers for entertainment purposes and not drawn from real-life events or people.
Most likely not. Usually, such stories incorporate fictional elements to make them more engaging and dramatic. It might be inspired by real events but not a direct account.
Hard to say. It could be partly based on true events, or it could be entirely fictional. You'd have to look into the author's background or any statements they made about it.