Forshadowing technique

Ok, so I have to write a forshadowing paragraph leading up to a crime. If it doesn't make any sense then, well... then I guess I'm not good at this.

I wonder who did it? I wonder who stole the jewels...?

Four days earlier-
As I was walking towards my house I met one of my friends on the street. We talked for a while and it seemed that she was mad at something or somebody. She talked negative the whole time and she only talked about her house. She went on and on about how her house bill is going up and how someone should do something about it. She was mad at the bank because she says that they were the ones who raised her house bill. I wonder?

I wonder who did it? I wonder who stole the jewels? It's probably something so obvious that I just can't remember. I need to eat more blueberries. (They help your memory.) So, I went to my fridge and pulled out a container of blueberries. I sat in my chair for two hours until I was finished. Then... I GOT IT!

I ran to the police station and told them who my suspect was. They got a warrant and went to the suspect's house. When they came back they had the jewels! Thank you, thanks, thank you, was all I heard for the next week. I was so proud of myself and so thankful towards the blueberries! We caught her all thanks to them... and me, of course!