Can you correct my mistakes please :)

Recently, I started reading the diary of a young girl but I didn't feel any shame. The diary belonged to my wife's grandaunt Clara who lived years ago. Clara had lived in the beginning of 20th century. When she started writing the diary, she was 11 and continued to write. According to the page I read so far, she was insightful, friendly and happy. But she died at the age of 13 by the fire which broke in the house.

Thanks in advance for your help :)