editing of passage

Hi everybody
Could any member/s please go through the following short passage and correct any mistakes in it? Many thanks in advance for your help.

One breezy afternoon, Mary and her sister, Jane, returned home from school. They were surprised that their mother was not in the kitchen or the living room. They went into her room and were surprised to see her in bed. She told them that she was sick and told them to eat at the coffee shop as she had not prepared lunch for them. They agreed without hesitation. After they had returned, they help their mother to do the housework. They washed the dishes and swept the floor. After that, they did their homework.

The next day, their mother felt much better. She had taken some tablets for fever. She did not see a doctor because her fever was mild. When she saw that all the dishes had been washed and the floor was clean, she knew at once that her daughters had done the chores. She praised them for helping her. Mary and Jane were glad that their mother appreciated what they had done.