Final answer:
Helen has had a busy two weeks, including time spent in a valley, accompanying her mother, handling legal matters that affected her sleep, and returning from an absence coinciding with an engagement.
Step-by-step explanation:
Based on the text references, Helen has been engaged in various activities over the past two weeks. She spent some time in a valley and also had moments where she seemed to lose sleep. One day she returned after an absence that coincided with someone's engagement, signalling she had been away during this time. It is also mentioned she walked around with her mother, although her mother would get tired.
Another reference suggests she spent time on a lawn for an entire day and experienced legal wrangles, partly affecting her sleep. However, specifics of her whereabouts during the last two weeks remain somewhat ambiguous within the texts provided.