I can't say whether or not that might help your wife as I am a bit leary of such claims. I will say, however, that there are many very good natural treatments and protocols which could likely help your wife beat cancer. Some of the best are over 80% successful even on advanced and aggressive cancers.
You can find many such protocols here in this forum - and I am talking about ones which have been proven to work using natural healing items and practices - not ones which rely on the fantastical.
$200 (the price of the "God Particle" crystal) could buy you quite a bit of powerful cancer-fighting and immune boosting items - such as oleander extract, N-Acetyl Cysteine, colloidal silver, a top quality medicinal mushroom product, inositol/IP6, colloidal silver and more.
We have found that a comprehensive anti-cancer protocol which involves a healthy diet and lifestyle, proper nutrition, supplements, toxins removal, stress managment, etc. will work the large majority of the time.