It depends on your perspective. Some elements of 'A Way Back' are inspired by true events, but there might be fictional additions for dramatic effect. Overall, it has a foundation in reality.
I'm not sure specifically as I haven't read this novel. It could be about a journey where there is literally no way back, perhaps a character's decision that leads them into an irreversible situation, like getting involved in a dangerous adventure or a complex relationship.
Sadly, I have no information regarding the author of 'no way back a novel'. Maybe you could ask in a local book club or a specialized literature forum where people might be more familiar with this particular book and its creator.