Well Carlas is M.S. at her most quiet.
Carlas is just one of my many personalities, the shy and quiet one. She was a bit more open when she first joined the Downs but now has become quiet and content to just float around in the backround. M.S on the other hand is just...weird. A crazy 15-year-old who enjoys life to the fullest and isn't afraid to be heard. She can be quiet sometimes, but that's just Carlas starting to creep to the surface.
Oh well, maybe M.S. will make her appearance some day!