My girlfriend wants to save herself for marriage, the doctor just told her she has cervical cancer, and she says she never had sex with any man before, except when she was rape at 8. Should i belive her when she said she did not have intercourse? why?

See , i dont think that she is saying true but but it may be...

yes you shoud believe her - why would she lie? cervical cancer is cancer - it may be caused by HPV but there are other ways to get it - not just through sex -however HPV can be transmitted orally - but I go back to why would she lie

step up and support her - she was just diagnosed with cancer she does not need her partner questioning her integrity at this time

Hi...

The methods of treatment of cancer cervix were more or less same in 1990's as today, but that does not put anyone in bad picture,.. one has to see what it was then and what was actually advised, it is easy to point fingers.
For e.g. very early cancer (carcinoma in situ) can be treated by a simple meathod of LLETZ which is an office procedure and life is normal after few hours, patient is cured for life and may not remember anything(least of all- any medical terms) after 10 years.
You may speak to an oncologist in your area

And with early disease one can be completely cured of cancer and continue to live more than 10years and may die of natural causes(as most of us will)...