Like a small boat on the ocean...
we are both sort of correct and wrong. Tiffany skated pairs with her brother Johnny. Then she turned to ice dance (when she got tall, and Johnnie didn't want to skate. You are right about Stephanie.You're thinking of their sister Stephanie. She was a pair skater (last with John Zimmerman). It's Tiffany who tried ice dancing. I don't think Stephanie ever did. I'm sure someone will correct me if I'm wrong.
I agree that Kristi and Rudy could have been world champions in pairs if they hadn't split. However, Rudi and especially Kristi had enormous success as singles. I still watch Rudy's win at Nationals and still get tears.
I loved the ice dance that Tiffany did (at least what I saw of her.
Tiffany was good friends with Sasha back in the day. In fact, Sasha's first car was purchased from Mr. Steigler's car dealer. (How is that for trivia?)