Also since you asked
The original design of the suit included 2 features that were not implemented on any of it's final builds, first one being a final defense mechanism that allowed the user to absorb any kind of damage, and turn it into a massively charged electric explosion, which was considered extremely dangerous due to the possibility of malfunctioning.
This text in ending B is very likely what happened to her face, also the other parts of the text has important info regarding her condition as well.