Hello, I'm Nattamon but you can call me Ice! Yes, my nickname is actually Ice, given by my parents. According to my parents, the meaning behind Ice is that they want their kid to be calm or coolheaded ("calm" in Thai is ใจเย็น "Jai-yen"; literal translation: cool heart)...
If you would to learn more about Thai's naming culture, I would be super happy to talk about that. Please feel free to reach me out