Which detail from the text best supports the idea that the narrator is worried during her trip?

she has trouble speaking with people in town.

her suitcase will arrive later than expected.

she has had no sleep in nearly 24 hours.

it is nighttime when she reaches the eiffel tower.

Personally, I'd choose "She has had no sleep in nearly 24 hours" but "She has trouble speaking with people in town" is also valid in this case. She could have trouble speaking with people in town maybe because she's not very outgoing, but the fact that she's had no sleep in nearly 24 hours means she has something on her mind that's bothering her.