The Park City Ski Team member dominated the under-18 and under-21 slalom events on Saturday and Sunday at Snowbird Ski Resort, taking first place in both races.
"Last year I stood on the second step of the podium a lot," she said. "It was nice to get on the top for once."
Frankenburg finished her two runs on Saturday in a total time of one minute, 38.9 seconds, 1.28 seconds ahead of her closest challenger. On Sunday, she clocked in with a time of 1:41.50, 1.13 seconds ahead of the second-place finisher.
She said winning both races was a nice indicator of how well her training has been going, but that she didn't expect the races to go as well as they did.
"I didn't really know what to expect," she said. "There's so much competition, even with in our own team."
Her PCST teammate, Hannah Hunsaker, finished in third place on Saturday.
Frankenburg added that the course on Snowbird's Wilbur Run was an easier course than the ones she's been training on, and that the staff did a great job maintaining the run.
"I liked the course," she said. "This year, we've been training on more technical courses, but this one was more simple."
The Park City Ski Team, which has produced Olympians like Ted Ligety and Steven Nyman, also had a good weekend on the men's side.
Dominic Demschar led the way, finishing in fourth place on Saturday before landing a podium spot on Sunday with a second-place finish.
Even Winquist of Norway took home first place on Saturday and Bryce Astle of the U.S. won Sunday's race. Sunday saw five PCST skiers crack the top 10, led by Dominic Demschar's silver. Daniel Demschar placed fourth, Darwin Taylor finished sixth, Hayes Graham finished eighth and Bridger Clifford took ninth.