1: The second "she" is not necessary. 2: "The girl IS drinking juices and eating cakes" should also be accepted (without a second IS after the "and").
"The girl drinks juices and eats cakes" is accepted.
I wrote "the girl drinks juices and eats cakes" and it was not accepted.
Most likey you made an additional error but the second she caught your eye. This is exactly what happened to me. I figured it out after i submitted my flag saying it was wrong.