<human>: Can you provide a brief overview of the text?

This happened about two weeks ago but I still get so embarrassed and mortified when the scene just pops up in my head.

So last last Sunday, I signed up for this flag day thing where you go around and ask for donations to put into this tin can. I'm still in high school tho you don't call it that here and I was just doing for fun because I liked helping to collect donations and talking to strangers. 

In this activity, you're supposed to give stickers to those who donated but I ran out of them quickly. So.... I decided to make origami instead! This was a big hit among children and my tin was filled up pretty quickly XD 

Then this British guy (I think) comes along with a crying girl and another child, I think, and he looks really really hassled and annoyed cuz the mom wasn't there to help out. Finally, they stopped in the middle of the pavement and I just figured that maybe the girl would cheer up if I gave her an origami. 

So I went over to them and was about to give her an origami flower when the father looked up and started to say in a really loud and harsh voice, "No. No! I'm not going to give you any donations! Please leave us alone." 

He said some other stuff as well but I had already blanked out because I was pretty much mortified by then.

His voice was so damn loud and I just felt so embarrassed standing there. I tried to tell him that I just wanted to give his girl a flower to cheer her up but he cut me off and walked off. 

I seriously nearly cried on the spot because it sucks to be yelled at by a stranger who misunderstood your actions. And it was so freaking embarrassing because everyone was looking at me and I was wearing my bloody school uniform! 

For a couple days afterwards, I got this really big fear of talking to Ang Moh guys (White guys, in general) and just bolted whenever one of them went near me. (If you peeps didn't know, I'm Asian and this happened in Singapore) But, luckily, my fear dissolved when this really cool Australian dude cheered me up with a puppet koala when I was going home from school!
<bot>: Tried to make a girl smile with an origami but was yelled at instead by her dad. Got scared of white men for a while but was cheered up by a cool koala guy afterwards so it's all okay!