Final answer:
By using the term "Doggone" and expressing a lack of interest in carrying on with her fishing or trying to figure something out, Granny is clearly expressing her irritation in her statement.
Step-by-step explanation:
Granny's statement, "Doggone! I don't feel like fishin' er figgerin' any more," expresses a sense of irritation. This can be deduced from the use of the exclamation Doggone, which is a colloquial expression of frustration or annoyance. Granny does not show any signs of being content, enthusiastic, or indifferent.
Instead, the phrase indicates that she is tired and possibly annoyed by the activities she mentions, fishing and figuring.