In this picture from chapter 13, it's showing how Felix is sad and not feeling to good about his over all day. As it says in the book, "That I observed the countenance of Felix was melancholy beyond expression; he sighed frequently, and once his father paused his music, and I conjectured by his manner that he inquired the cause of his son's sorrow"
A woman, that Felix describes as the most beautiful girl, comes to see him at his cottage, but doesn't speak the same language as him and the creature
This is where they all get into the house and they try to talk to Safie. This is also when Felix and everyone else is trying to teach Safie their language, so she could understand them more.
Safie's Dad was sentences to death and when Felix had found out, he had helped Him to get into the heart of the Safie's father because he wanted to marry Safie.
When it was let out that the DeLacey family had helped Safie, they got sent to a cottage out where Safie was allowed to go and she was supposed be watched by someone to make sure she didn't go anywhere near the cottage.
Safie ended up going to the cottage anyway and meeting up with the love of her life and continue to stay all the way into the next chapter