Matilda was born to a purist colony. Purists are those who believe change through Evolution is the only true future for mankind.
They are against modern enhancements (glanding, genetics or augmentations) because they believe they break evolution and will lead humanity to stagnate. Generally, this leaves purists at a disadvantage in competitive fields such as the life of an officer on board a capital ship.
Matilda has had to work hard to compete against others with enhancements, which has made her hard to please and easy to anger. Much of her attitude is reflected in her look – buttoned up, crisp uniform. She is deadly serious and all about the rules – part admin and part solider. She gets little respect from the Marines, who by the nature of their work, revel in augmentations. However, few can compete with her when it comes to keeping a Launch Bay running efficiently.