Talk:Scootaloo/@comment-26423071-20180423221652/@comment-4531340-20180501074456

If I had to guess, because they want it to be true - plus it would be consistent with the other two CMC.

Y'know, it's funny, during season 1 (I believe) Faust said she didn't think Rainbow Dash would be a good big sister, but by the time Sleepless in Ponyville came about in season 3, she had undergone character development to the point where her taking on a role as an honorary big sister to Scootaloo made sense.