Final answer:
We cannot accurately identify the third event for which the narrator owes her mother her existence due to lack of explicit information in the provided texts.
Step-by-step explanation:
The third event for which the narrator owes her mother her existence is not explicitly mentioned in the provided texts. Therefore, we cannot accurately determine what this event might be without additional context. The passages provided discuss various circumstances related to familial dependency, loss, and the importance of kinship, but they do not offer a clear sequence of events that includes a third specific occurrence tied to the narrator's existence. As such, an accurate and specific answer cannot be furnished based on the information given.
To provide the student with a well-supported, accurate answer, it's essential to have complete information, especially in cases like this where the question refers to a specific detail within a narrative. Without the relevant text or context indicating this third event, we cannot complete the task of identifying and explaining it.