Shiho Hahnenfuss is an Yzak fangirl who works under him in his squad, appearing in the manga.

http://www.gundam-seed.net/msv/pilot/images/shiho.gif

She is rumored to be the character sitting next to Yzak/Dearka in the first GSD ending, so she might show up later.

This is her mech, the YFX-200 CGUE Deep Arms:

http://mahq.net/mecha/gundam/seed-msv/yfx-200.jpg

As for the game, Reita burned it for me.