Question

32 dad and aunt allison were cheerfully swapping stories, and grandpa was grinning. maybe that was the story after all.
how has isabella changed by the end of the story?
she is not interested in being a journalist anymore.
she would prefer to let her dad and allison be happy than to uncover their past.
she now believes the family mystery is too complicated for her to solve.
she now believes that nothing happened between her dad and allison in the past.

Explanation:

The text shows Isabella observes her dad, Aunt Allison, and Grandpa happily sharing stories, and realizes this warm moment is the real "story." This implies she prioritizes their happiness over digging into their past mystery. The other options are not supported: there's no sign she lost interest in journalism, thinks the mystery is too hard, or believes nothing happened between her dad and Allison.

Answer:

She would prefer to let her dad and Allison be happy than to uncover their past.