What is the relationship between Ms. Hasina and Khaleda Zia?

Bangladesh’s former Prime Minister Sheikh Hasina is seeking cooperation from all political parties after her Awami League and its allies won an overwhelming parliamentary majority in that country’s first election in seven years. Ms. Hasina said today during her first news conference since Monday’s election that her longtime rival Khaleda Zia should accept the election results because voting was free and fair. Ms. Hasina also offers senior political positions to her opponents in exchange for their cooperation. Ms. Zia though rejected the election outcome, calling the poll "stage managed". She said the results are not acceptable to either her Bangladesh Nationalist Party or the people.