Thread:LapisLazuliisthebest/@comment-35155794-20181101001527/@comment-31152477-20181222203745

Judging from the conversation she had with Steven, she was going to disobey Rose and do things her own way but was stopped.

Steven: It's just, it... It's not what a Crystal Gem would do...

[Bismuth gets slightly angry, and starts walking toward Steven.]

Bismuth: Don't tell me what a Crystal Gem would do. Nobody's more "Crystal Gem" than I am. If you won't take it, I'll just use it myself.

[Bismuth tries to take her weapon off of Steven's arms, but Steven jerks away.]

Steven: NO! No one is using it!

Also, if Bismuth was evil, why would she have been on Roses side to begin with?