Maddie Des Jardins (Hungary) sent in these articles about Hungary's powerhouse swimmer. Maddie did a great job of describing the video and articles so I am going to temporarily pass the reigns to her.

"Here's a video [with the added bonus of her husband/coach's reactions because they're priceless]:
https://www.youtube.com/watch?v=3EiYfquAZ30

More about her relationship with her husband, in context of Rio [this one is more positive, showing that a lot of people actually really loved how much he supports her and how crazy he got when she won because he was so happy]:
http://www.news.com.au/lifestyle/relationships/marriage/relationship-between-hungarian-swimmer-katinka-hosszu-and-her-husband-shane-tusup-raises-eyebrows-at-rio-olympics/news-story/e59a7d0b50e11490f43438d6e552ef18

Also notable was that the announcer credited her husband with the win, which a lot of people found to be sexist... He was just trying to say that she's improved considerably since he became her coach, but the way he said it had a lot of people (rightfully) upset:
http://www.ew.com/article/2016/08/08/olympics-swim-commentator-dan-hicks-sexist-remarks

There are now unfounded rumors about her taking steroids [this article was interesting and I like that it called out that American news will bring up doping when a foreign country wins and that it's very unfair]:
http://www.slate.com/blogs/five_ring_circus/2016/08/07/katinka_hosszu_set_a_world_record_in_the_women_s_400_im_let_the_irresponsible.html 

This is another article mentioning her win, but it also got into some drama [between China and Australia] in the pool in another match, which I found interesting:
http://www.stltoday.com/sports/olympics/hungary-s-hosszu-finally-wins-her-long-awaited-olympic-medal/article_d8b2b765-f9c3-55e8-856f-88e5f02b4814.html "

Thanks for the commentary Maddie!

10 Bonus points to Maddie for the thorough coverage! Go Hungary!