Let's break the code to find out Princess Zara's question.
From the image, we can decipher the question as follows:
So the question is: What were the strangers talking about when they were in my tomb?
To answer the question, let's look at the text provided.
The text says: "Yesterday 'was an interesting day! I had visitors. I was sleeping when they arrived. While they were exploring my tomb, I woke up. An old man and a boy were reading hieroglyphites and a girl was putting on my necklace. I was trying to help her because the boy saw me and screamed! It was strange because I was trying to scare them! I wanted to help."
Based on this, we can answer Princess Zara's question.
Answer: The strangers were reading hieroglyphites and putting on my necklace.