she could have autoimune hepatitis or many of the others non viral "itis".
do a search for the non viral ones or just ask her which one she has, it would save you time and worry.
GL
It would be reasonable to ask her to explain more to you about her condition as close as you appear to be.I would hope that she would be willing to volunteer info to you to put your mind at ease. frank
<a href="http://www.cdc.gov/ncidod/diseases/hepatitis/a/">Hepatitis A: Index | CDC Viral Hepatitis</a>
If she doesn't know, suggest that finds out from her doctor.
If it is hepatitis c, it's a type of hepatitis that isn't considered sexually transmitted and condoms aren't generally recommended for monagamous couples.
On the other hand, some studies suggest there may be a low percentage of transmission, so it's really an individual decision to use condoms or not.
Until you find out what's up, don't use any of her personal items like a toothbrush, nail file, razor, etc, that might have a micro-droplets of blood on it. Hepatitis C is transmitted by blood to blood contact.