Since we lack the details of the 'Mona Darling full story', it's difficult to define who Mona Darling is precisely. She might be a protagonist in a love story, facing challenges in her relationship. Or she could be a strong - willed character in a thriller, fighting against some sort of danger. There are countless possibilities depending on the nature of the story.
I'm not sure. It depends on the specific context and the creator's intentions. Sometimes stories are inspired by real events but have fictional elements added.
Honestly, I have no idea. There's not much information readily available. You might want to check with official sources or dedicated fan communities for a definite answer.
Most likely not. Many such stories are works of imagination and not based on actual facts. Alice Darling might have elements inspired by real life, but it's not a true account of something that happened exactly as presented.