You literally transmute matter at will, you do not need to fight Killcannon just turn his robot arm into cheese or something. Your nemesis is a villain that you do not need to consider the whole cannot effect living tissue thing for even a second. That is all.
Eve is either dumb as rocks, or not nearly as powerful as everybody on this sub seems to think she is. My head Cannon is that those pink barriers are much easier to create on the fly than manipulating matter.
I haven’t read the comics though, so maybe this statement looks really dumb once you take those into account.