My guess is that it's more weighing 180 at 4 feet tall. 180 is massive at 5 feet for a woman, to say nothing of 4 feet.
She is 121 pounds as of two weeks ago according to herself: https://www.facebook.com/photo?fbid=246278552.... She probably just lies about the weight for engagement.
As for the synthol or not: Not sure... I have noticed there is little definition in her legs when she has low bodyfat. Might be synthol or it might be because her legs hold onto fat which could be a thing because of her height. I am inclined to believe it is because of her height though, Allison Warrell also seems to have the same thing even in contest shape.
Her quads jiggle around oddly even when she's flexing.
Then again she is extremely short so that could cause unusual proportions.