I read this story in English in the 2000s (although it was probably much older), in a collection or anthology of several short stories by different authors; I think the collections may have been called something along the lines of "Tales of Mystery and Horror". It also included Roald Dahl's "The Hitch-Hiker".
A girl is walking along the street when a man in a car tries to entice her to get in with him, offering her sweets and begging her. She's been warned by her parents not to get into cars with strangers, even if they offer sweets, so she easily spurns his offers. But this man is different: he seems helpless, he doesn't even know how to drive a car, and he's begging for her help. He tells her that he's an alien from another planet, stranded on Earth without knowledge of its norms and technologies. Finally she sympathises and gets into the car with him to help him.
I'm vague on the middle part of the story, but it turns out that he is an alien, but one sent to Earth to entrap humans and take them back to his planet for investigation. She ends up among other captured humans on an alien planet. They're given food and kept healthy, but not allowed to leave.
At the end of the story, the girl manages to escape from the human enclosure, in an alien vehicle which is sort of like a bubble. The catch is that she doesn't know how to drive the vehicle, so she ends up helpless in the streets outside. She tries to ask for help from some alien children, even offering them some of the food which she kept in her pocket after the prisoners' last meal. But they laugh at her expecting them to be so gullible, "offering us sweets!" - they too have been taught by their parents not to get into vehicles with strangers. She remains there, helplessly, until her captors come to collect her and bring her back to the human enclosure.
The mirroring at the start and end of this story were memorable, even if most of the other details are forgotten.