I have no words.....

But, I'm curious -- what's the textbook? And, do they have details about the Victorian version?

Never heard of it, btw -- from what I know, apart from random twists and turns to fit the times that folks narrating it in the oral theatre tradition might take (those aren't actually considered 'versions'), all actual Ramayanas finished being written sometime in the BCs or at the most by 1200 AD.