What does Paul's sister hate and why?

(Read the text and answer the question)

On weekends, Paul and his family went to the park. They went on a picnic there.

On picnic days, Paul liked to watch and feed the animals, play around the park, listen to the birds' singing, and watch the little rabbits running around.

Paul's mother made simple sandwiches on picnic days, because both his mother and father didn't like to cook on picnic days.

Paul's father got angry when Paul and his sister went near the bushes. He didn't want them to go too far out of his sight.

Paul and his family liked to go to the park, because they loved being outdoors and feeling free. Moreover, they could relax there.

Paul and his sister play around the park and feed the animals.