Why does Violet Evergarden seem to have a habit of biting things? I don't mean just the times when she bit the gloves to pull them off her hands, which may be done easier than with her prosthetic hands, but also these two moments:


After she received a puppy doll from Hodgins, she held it with her mouth. When asked why she chose the puppy doll, she replied she was called "Gilbert's dog" by Gilbert's brother, which may be interpreted as an apt nickname for her biting-like-a-dog behavior.
After Gilbert's brooch was bought back from the black market by Hodgins and returned to Violet, she again held it with her mouth while lying on her bed at night.


I found a discussion on Reddit, in which one redditor said


  From what I understand it's because Violet's hand can't grip hard enough to put the glove on properly so she used her teeth instead.


I don't completely agree. After all, Violet performed a rear wrist lock on a customer, so she can grip hard enough.

Another viewpoint is that Violet did it because


  she lacks feeling in her hands, but she still has feeling in her mouth.


This seem more plausible, but I still think she could feel more by touching with her cheek, which she did initially with the puppy doll.

Is there a better explanation to this curious behavior of Violet-chan?
She has trouble writing with a pen and in the second episode we see her adjusting her fingers to type better. This means that her prosthetics are not perfect.

I disagree with point 1, it's much more likely that it refers to her following Gilbert around and obeying him like a loyal dog rather than anything biting related.

For point 2 it is very likely the feeling related reason.