While Holly may be a twin sister to Sandra, their resemblance is only skin deep.  Where Sandra is the talented, impulsive, all out extrovert.  Holly goes the other way.  Of 'modest' talent, she is thoughtful, and introvert.

She was trained to fly Aerotech, at he same academy as Sandra and had good marks, and well received by her instructors.  She offered a post with the Skye Rangers, but quietly declined the invitation.  Sisterly loyalty had her follow Sandra into a life on the road as a mercenary.

Sandra has been quietly drilling and training Holly on the side on how to pilot a Commando, hoping that they might some day pilot together in the same lance.  While making progress a mech to actualy pilot, has eluded her. For now applies herself for the Eridani as a VTOL pilot.