The writer uses hyberbole to offer a lighthearted joke about the age of the grandmother.
Yes, it does, the sentence should be written like this: Beth, my two year old sister, is very curious, so I have to keep a close eye on her.
To prevent from succeeding.
Getting older objectively only has to do with chronological age. Growing up is more of a subjective term because it could mean an increase in age, an increase in maturity, or a change of personality.
I hope this helps.
