Answer:
Mary wants to know more about the garden, and wants to find it. She gets out of the house and starts looking for the gate/entrance. Being outside has changed her health and she is now so much more happy with being able to go outside and wander. She becomes a nicer person and is now in better health.
Step-by-step explanation:
When she arrived she was sick - sick in her heart and in her mind/bod. Now, she is free to feel better and get more exercise outside.