It is very possible. It was just right before she choose the shape was....weird...it makes me nervous because we saw with centipeedle that they started to lose themselves or the healing when they became upset. Low self esteem isn't too far off from being upset and feeling worthless...plus...Amythest was technically on Earth when the Diamonds did what they did so it has always worried me. Even when I thought they were made to be that way.

whale whale whale. Before, we have seen the term "Defective" used as an insult to the crystal gems, but I think that it's literally meant for Amethyst. She was the last of the gems to ever pop out of the kindergarten, supposedly when it was still active. Her hole, much smaller and further away from all of the others, signifies difference. It seemed like Ame was still kicking around the kindergarten when Rose and the others came across it, even though all gems are apparently supposed to know what their purpose is right after creation. Quartz gems apparently are a warrior race, and if Jasper is of any example, has a drive for violence and combat. Rose was a powerful general and tactician, but Amethyst most likely didn't have anything like that. She transforms and imitates people and things, and has had a history of quickly reforming, most likely to reflect how lost she is on her own purpose. Amethyst does what Amethyst is, but she knows that there is a purpose that all Amethysts are meant for that she cannot do.

Considering Amethyst's appearances in the Bismuth leaks, she may be safe. At least for now...
I'm more worried about Bismuth. The circumstances regarding her appearance are weird...

Given what we know and what we've seen, Bismuth might have A) been bubbled and placed with Lion to keep them safe until an unknown later event would happen. B) Be another prisoner of war, but that doesn't seem to be the case at all. I think Limp Bizmuth might be a builder of some sort, but I don't know.

True...Bismuth looked like a blacksmith of sorts in one of the promos.
However, the fact that she's considered a friend and a Crystal Gem is really what worries me because that may turn B) into...

B) Bismuth could have infiltrated the Crystal Gems and relay every bit of information to the Diamonds. Only Rose knew this, didn't tell the Crystal Gems because it would hurt them, poofed Bismuth, and bubbled her (just as the CGs bubbled Peridot). Rose would have hid Bismuth in Lion's mane because no one would think to look there (Pearl didn't even know about Lion, and she stated that Rose told her everything).