Hazel Ouwehand, the butterfly princess. Hazel the Commonwealth bronze medallist. Hazel the number cruncher. Hazel the social media sensation. Hazel the Weet-Bix card trailblazer. She may have many labels, some of them newly earned. But the New Zealand sprint swimmer swears she won’t be changing who she is or what she does in and out of the pool – even after winning her first major international medal in Glasgow, and becoming one of the first ath…