Betty's secret

"Betty and Fiona were twin sisters. They looked exactly the same. There are only one difference between them. Betty colored her hair red and Fiona coloured her hair blonde. The twins lived together a small house."

Today, I will introduce Betty's secret :)
This is one of the Oxford Story Tree series, level 9.
In this story, main character are Betty and Fiona.
They are twin and fighter.
One day, Betty was upset.
Because Fiona was always cheered by people but she was not.
When Betty said that, Fiona answered that "That's because I am Fair Fiona and you are Bad Betty".



Then Betty come up with an idea...


What do you think the idea was??