Sara used to be a great fighter pilot – moved into “management” after her flight status was revoked (an injury in Zero-G after her fighter was destroyed). Sara earned enough money as a CAG to obtain serious body mods and got her flight status back. By this point, though, she was locked in as CAG and no-one wanted her to leave. She had become popular and irreplaceable.
These days, she has found a nice balance between active CAG work and the occasional sortie behind the controls. She justifies these selfish and ultimately dangerous flights as being vital to her ability to function as a good CAG. It doesn’t hurt that it makes her very popular with her pilots.