señor ong and señor ha

This Short story made me want to read more ,at first  i didn't understand why the indian's were important in the story until they introduced Mr. Ong and Mr. Ha. I was confused but when i started reading more i understood what señor ong was hiding and why he was hiding. I was surprised because i didn't expect it coming and thats what got me more into the story. But then when nicho started doing the same thing , innocently i was mad and angry because he didn't really understand what it was to him it was a simple powder and obviously to us the readers we knew nothing good could come out of it. What i disliked was when Señor Ha told his aunt that nicho would be the one delivering it and basically thats when the story ended and i was expecting for it to keep going and telling the reader what would happen to nicho and what would happen to luz. the author was vague in not telling us details about what happen to luz when she got home , i was curious and i wanted to know more, I wanted to know why she was so worried about her sister, maybe was it because she was  harsh and she was taking care of luz? Why would nichos aunt accept this all along , i felt like she didn't have respect for herself and that all she cared about was money, it also showed this when she wanted nicho to bring luz just because of her hair. To his aunt she was lucky and brought luck " una hija de sol". I felt as if she was a very selfish person and nicho in a way knew this because he always avoided to bring her even be seen with luz.