I haven't done Step Max in a LONG time, but it seems like you are talking about Maria. She was in several of Cathe's earlier videos.
Maria is still a background exerciser in many of the CIA workouts. In one of Cathe's earlier videos, I remember Maria being in the warm up and then the cool down. Someone said that she had just had a baby so that is all she could do. I think it was in Step Heat.
Cheryl