Hodgking Lymphoma

Hi everyone. I was just googling for some information on cancers and I found this forum... so I thought this would be the best place to gather some information about what my girlfriend is going through. She had non-hodgking lymphoma about 10 years ago, but luckily she received treatment and survived. Nonetheless, she always speaks about how horrible the chemotherapy was, and how hard it was for her to get back on her feet. I never really thought she could get cancer again, but I guess I was wrong. She had to move away a couple of months ago and a few days after that she told me that she had a lump on her neck, just like the one she got when she got sick the first time. We thought it was nothing to worry about, but in next few weeks she got lumps all over her neck and her body started to itch really badly, so she went to her old oncologist, who told her that it was very possible that she had non-hodgkings lymphoma again or hodgkings disease =( She went through a series of tests (blood, mri, etc.) and the doctor discarded ANY other possibility other than cancer. We are just waiting for the biopsy results to get his final diagnosis. As far as I know this kind of cancer has a very low mortality rate, but like anybody else who has a loved one in this situation I can't help being terrified. Does the fact that it's the second time she has cancer makes it even more dangerous to her life? And, the fact that she has more swollen lymph nodes now than 10 years ago makes it worse??? Did we wait too long to go to the doctor?? I still have a hard time believing this is happening... she's only 24 and I was going to propose in May.