I think this is a different Robin Wagner. The one who coached Sarah Hughes would have been publicized it if she taught a theater on ice team.
This is from an interview Robin Wagner (Sarah's former coach) did in 2019:
Now she is “a retired old woman enjoying life” in Palm Beach Gardens, Florida, where her biggest athletic challenge is learning to play golf. “After having spent so many years in a refrigerator as a competitor and a coach,” she says, “I’m ready for some warm weather.”