Welcome to Healing Well. I think it's wonderful that you're so supportive of your girlfriend. It sounds like she's been through a lot. You might be able to help some people here, too, because we get a lot of questions from new ostomates who are nervous about dating. Since almost all of us have ostomies, you could shed some light on the subject from the perspective of someone who is dating an ostomate.
I was already married when I got my ileostomy. My husband had seen me sick with Crohn's Disease for 7 years, so he is thrilled that I'm healthy and doesn't even notice my ostomy. His acceptance of it has really helped me accept it, too.
Dx'd Crohn's in '99 at 28. Proctocolectomy and ileostomy in '06.
Disease-free, medicine-free, and very thankful to be healthy again :)