The Cambridge High School student, who was born without hands, , began swimming about the same time she met Ulmer.
She received a call from Paralympics New Zealand at the end of June after a nervous month-long wait saying she had made the swim team of eight.
"I was pretty excited, but then I went to tell my coach and he didn't even listen to me, he was like, 'yeah, I know'.
"He kind of expected it and didn't seem too surprised."
It's the latest in a stellar swimming career for the teen, who trains six days a week under former Romanian Olympic swimming coach Narcis Gherca.
Last year she competed against women more than twice her age in the open division and won a silver and a bronze at the Pan-Pacific Para-Swimming Championships in Canada.
She bettered the 3m 14s qualifying time for her specialist event - the 200m individual medley - at this year's Central North Island swimming championships but needed to repeat the feat at the British International Disability Swimming Championships in Sheffield in May. She did it with a second to spare.
The Paralympics start on August 29.