All I'll say is that she is taking a grave risk by staying loyal to Mustang.
The 'bad guys' in this show seem basically unstoppable and indestructable... I doubt even Mustang can stand a chance against them. So she won't have anyone to protect her from them.
I agree that she is hot though and it would be quite a painful to see either her or Mustang get eaten by Gluttony for instance as they scream