Well, thanks for the info. I'm still a bit confused though. If Gabi Rose Regan was still playing the role in 1992, she would have been only three years old. I don't think BB, Snuffy and Elmo would be calling for somebody that young. Then again, I guess it is possible, considering Elmo's only three and a half. Actually, Ilikemuppets, you could be right about 1990 and maybe what it says on the description at You Tube would be incorrect. Though if that were the case, Gabi would only be a year old.
No offense, Mike, but I think I'm going to go with the theory that there was someone else playing her from 1991 to 1993 before Desi came along. Whoever it was, probably didn't get much airtime and was probably unknown, unlike Inani Patterson (the second Miles) who was on the show for quite a while.