I had this idea while I was under a lot of stress from work haha
Before being a crow made of candy and paper, Sweety was just a happy giant candy next to Stiletto. But in a typical fight between heroes and villains, she was accidentally destroyed. When she tried to regenerate, she used all the candy and wrappers around her. But when she realized the reality, she was alone and scared without knowing what to do. That left her with a little trauma. She doesn't talk much, unless she's next to Stiletto. Since she trusts him a lot.
A bit of a strange story, but I more or less imagined her birth like that.
A little sketch of Stiletto with Sweety when she was still a mutant candy.