Emma Buckley-Robins, 22, attends sessions run by staff at the Telford Snowboarding and Ski Centre in Madeley.
Her father Simon said she had the cognitive ability of a "two to three-year-old", but that the ski sessions had given her more confidence.
"Before, she couldn't do anything. We had to strap her into one of the little buggies and they [ski instructors] would take her down the slope," he said.
"She's progressed from that to being able to go up the ski lift to the top by herself, which is just absolutely amazing.
"We were in tears when we first saw it because we never thought she would ever do that, to ski down halfway by herself."
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