I would agree with your daughter. Chemo never actually cures anyone. At best it relieves the symptoms of cancer to greater or lesser degrees and at a horrific price in terms of side effects and damage to the immune system and major organs - paving the way to the return of cancer which will have less natural immune resistance to combat it.
I know that Poly MVA has been successful for a number of people, and is considered most effective for brain cancers and leukemia. The success rate for Poly MVA as a standalone treatment is far less than 100% however. It has virtually no side effects, but like chemo the patient often succumbs in the end. The good news is that Poly MVA can be combined with many other treatments and protocols so long as you keep vitamin C and other antioxidant intake down to reasonable levels (no megadoses in other words).
Oleander, iodine (50 or more mg per day with at least 200 or more mcg of selenium daily - according to Trapper 100 mg per day and 800 mcg of selenomethionine), colloidal silver, colloidal gold, vitamin D3 (the sunshine vitamin), inositol/IP6 and the rest of my anti-cancer protocol are generally very effective against colon cancer, even when it has metasticized (chemo on the other hand, is very rarely effective against metasticized cancer of any kind). The protocol may also help address the underlying causes which led to the cancer in the first place as well as it's return - though I suspect that it was never fully irradicated but instead merely reduced to non-detectable levels.
As far as organic sources, the ONLY sources I know for oleander are organic. It is made from an extraction of the oleander plant itself in either home remedy, patented medicine or herbal supplement form. The most popular herbal supplement form is Sutherlandia OPC and I recommend it highly.
I invite you to join my Oleandersoup health group where there are a very great many people who use, make and recommend oleander extract - including some very good naturopaths and herbalists - and let us help you and your daughter through her journey towards wellness.