Simplify the following text for a Grade 7 native English-speaking person.
Original: Margot Betti Frank ( 16 February 1926 -- early March 1945 ) was the older sister of Anne Frank , whose deportation order from the Gestapo hastened the Frank family into hiding , and who subsequently perished in Bergen-Belsen .
Simplified: Margot Betti Frank ( 16 February 1926 -- early March 1945 ) was the older sister of Anne Frank .