Northern Irishwoman Gallagher moved from eighth after her first run in the visually impaired event to take sixth, behind Austria's Sabine Gasteiger.
Gallagher - 24, from County Down and the first winter Paralympian from Northern Ireland - was delighted after her second run, behind guide Claire Robb.
Team Manager Dave Chugg was pleased with the team’s performance: "It’s been a good day for GB on the hill”, he said.
“The girls skied out of their skins today and, although their form was showing good signs, to perform like that with all the pressure at a Paralympic Games was very impressive. We're in a good place before Tuesday’s GS.”
Gallagher, competing in the visually-impaired event, finished eighth in her first run and then put in an outstanding second run which lifted her two positions in the rankings. Her sixth place finish is an excellent result for the young athlete given she has only been competing just over a year.
A clearly delighted Gallagher said: “I’m immensely proud. We were secretly hoping for top five but the first run I was really nervous so I felt really proud after my second run. It was really good coming into the finish area knowing that I’d finished two runs and I hadn’t fallen."
With this event complete, Gallagher can now focus on her preferred event, the Giant Slalom.
“Slalom isn’t my best event, I find I can’t really enjoy it. I get nervous because the gates are so small and I can’t really see them”, she said. “I’m looking forward to the GS.”
Kelly is a SINI athlete and is funded through the Athlete Support Programme at Sport Northern Ireland.
