Mom having a liver biopsy, already been diagnosed with cancer 4 times?

I will try to keep it short. My mom has a liver biopsy scheduled this Thursday after an abnormal CEA blood test came back (normal level is 3 and her's was 8), a bone scan, and PET scan. The bone scan came back "inconclusive" (or so she says, she tends to hide things from us) so they did the PET. Obviously they found something now so they're doing the biopsy. In the past 10 years she has been diagnosed with cancer which spread to her lungs and bone and then cancer again last fall. I know it has probably spread again and she seems optimistic about anything they find they can treat it, but without her giving us details its hard not to ume the worst. Anyone know of good websites about metastatic cancers? Any personal advice/experience would be appreciated. Thank you.