Do you mean:
"And then we went to the store? And she saw the cutest pair of sandals? And so we said she should just buy them? And then after that we got those lattes?"
Ugh. I think it is insecurity writ large because it seems to be saying after each sentence "Are you still following me? Still listening? Do you understand me?" It's ugly.
QUESTION: Is the appostophe denoting the possessive form in "world's" in the correct position?
Yes! Yes! Yes!
I'm always tempted to answer with, "I don't know?" :)
Caveat: English is not my first language.