1. The reason why mum and dad left their daughters for 3 days is not provided in the text.2. Sally's age is not specified in the given information.3. The specific events that occurred on Monday evening are not mentioned.4. Sally's desires or intentions on Monday evening are not stated in the text.5. The exact time or circumstances when Kate phoned the doctor are not given.6. The actions performed by the doctor are not detailed in the provided information.7. The person who bought the medicine is not identified in the text.8. The level of difficulty in making Sally take the medicine is not described.9. The methods or strategies Kate used to make her sister take the medicine are not mentioned.10. Kate's feelings when the mother came back home are not specified.11. Whether Kate liked being a nurse for her sister is not addressed in the text.12. Mum's statement about Kate is not provided in the given information.