Some recessive genes actually do have a tendency to influence pattern/color in their het form. While not a reliable way for the average person to say with certainty the difference between a normal and a het, these markers can be used as possible indicators of a recessive gene in play. My guess is that is what is going on to cause you to think there's something else going on here.
From what I've read, the white coloring you see coming up from the belly around the alien heads is typical of het albinos. No way to know for certain until you breed her and prove it out though.