Final answer:
Without the relevant text, the question regarding what Aunt Daisy found when she went to get Phoebe to go out on deck cannot be accurately answered from the provided excerpts.
Step-by-step explanation:
The provided excerpts do not directly answer the question of what Aunt Daisy found when she went to get Phoebe to go out on deck.
While various scenes and interactions are vividly described, such as Daisy Miller's interactions with Winterbourne and discussions involving Mrs. Costello, there is no mention of a character named Phoebe or an incident involving Aunt Daisy finding her to go out on deck.
Thus, without the relevant portion of the text about Aunt Daisy's action and Phoebe's situation, a factual response to the student's question cannot be completed. It is important when answering questions about a text to have the correct passage that contains the answer.