We are glad that you are helping with the decryption of Eliza's secret letter. From our experience with cryptography we understand that Eliza has been used an encryption method in which every page has a hidden puzzle the solution of which should provide a necessary piece of information to solve the puzzle on the next page.
Need a hint?
Page 2 (Oct 4th 1922)
It seems like Elizabeth described a certain location on the previous page.
Page 3 (Oct 18th 1922)
There are so many objects on this page... one of them needs to be of special significance.
Page 4 (March 7th 1923)
What is different between all those star signs?
Page 5 (March 15th 1923)
We are sure that there is a whole sentence encrypted in this stone.
Do you have the solution?
Please try your answer here. The page is password encrypted and you need the third, the twenty-eight and the twentieth word of the text of the final solution to access it (in exactly this order, and please use spaces in between the words and pay attention to capitals).