Simplify the following text for a Grade 7 native English-speaking person.
Original: At Tobolsk , she wrote a melancholy theme for her English tutor , filled with spelling mistakes , about Evelyn Hope , a poem by Robert Browning about a young girl : `` When she died she was only sixteen years old , '' Anastasia wrote .
Simplified: At Tobolsk , she wrote a sad theme for her English teacher , filled with spelling mistakes , about Evelyn Hope , a poem by Robert Browning about a young girl . `` When she died she was only sixteen years old , '' Anastasia wrote .