I'm sorry but without more knowledge about this particular 'After the Silence' true story, it's impossible to name the main characters. It could be a story about real people in a small town, or it could be about historical figures in a particular event. We need more context.
I don't really know. It might be a blend of truth and imagination. Maybe check with the author or look for interviews where they discuss the inspiration behind it.
Yes, 'Silence of the Lambs' is based on true events to some extent. The character of Dr. Hannibal Lecter was inspired by real - life serial killers. However, the story is also a work of fiction with many fictional elements added for dramatic effect.
No, 'The Gulf of Silence' is most likely fictional. Usually, such titles indicate a work of imagination rather than being based on real events. The plot and characters are likely crafted to engage the audience within a made-up world.