
sorry Bebpo. That sounds like an extremely trying situation, grats to you for sticking with her and helping as best you could. Splitting's likely best for both of you, I had a suicidal partner (though I didn't figure it out til fairly late in the relationship, a very guarded individual), when we broke up I helped her move back with her parents, now a few years on she's doing a lot better. family support is so important when dealing with these things. Hopefully she has some loving relations she can rely on.
As far as the pain goes I have a little experience, I've had some spinal issues, lapsed disc in my lower back which caused two vertebrae to fuse. Physio and chiropracty accompanied by special exercises worked quite well. I took a bunch of meds at points too but they only worked in tprettyhe short term and didn't leave me all that functional and often too lazy/mentally lethargic to work on my situation as well as addictive.
You mentioned she was interested in alternative therapy, and I don't know what your situation with her is now that you're not together, anyway I tried cranio sacral therapy
http://en.m.wikipedia.org/wiki/Craniosacral_therapyAbout as airy fairy as it gets, and I was extremely dubious but it has had a really positive effect on my physical and mental well being. I imagine it's purely some strange psychosomatic response but it did do something for me so I'll take it.
Not sure about the Marijuana, I also have crohns and have always been an irregular dope smoker but haven't noticed it have much of a positive effect. Managing my diet (drinking 4 glasses of water when I wake up, only drinking warm water after meals as it stops solids and fats separating which then line your stomach/intestines adding to inflamation, reducing the amount of fatty foods and any other foods I notice tend to cause inflammation) works way better than smoking green. I have noticed it relieves symptoms if I'm having a flare up tho as it relaxes the gastrointestinal tract but from what I've read and experience it has little preventative value.
Good luck!