nasopharyngeal carcinoma stage 4B

Hello all, one morning my gf (31yrs old) woke up with double vision on her right eye, she lost 50% of her hearing on her right ear and she lost feeling on her right side of her face. I immediately took her to the emergency room and she was diagnosed with stage 4B NPC in early July. Her tumor was 7cm and was super aggressive so she got her Peg tube and mediport installed as soon as we could and she started her treatment within 3 weeks. She lost 16 lbs before she even started her treatments. Doctors were worried about her weight since she is very petite. Her Biopsy report came back as Nasopharyngeal carcinoma, non-keratinizing type (WHO TYPES 2 and 3). It shows prominent nuclear staining for EBV in an in situ hybridization study. Doctors said this type is very responsive to radiation and chemo. She completed 7 weeks of daily radiation treatment with Cisplatin every 3rd week plus additional 3 sessions of Cisplatin and 5FU after the radiation treatment. She fainted couple of times during 3rd week of radiation and she was hospitalized for a week because she was dehydrated. The doctors took this opportunity to do another MRI scan while she was in the hospital and it shows the tumor increased in size from 7cm to 9cm. Doctors told us not to worry about it since she only did 3 weeks of radiation. The 5th week of radiation, her double vision was gone completely and her hearing was back to normal. On her 6th week of radiation, the numbness on her face was 90% gone. On her 7th week of treatment, her eye was functioning like it used to before the cancer. She got most of her saliva and taste buds back less than a month after her radiation treatment. Its now 3 months since she completed her radiation and a week since she done with chemo. Thanks to the peg tube, she actually regained 10 lbs during the treatment. We tube fed her 4.5 cans of high protein drinks (Osmolite 1.5) per day with over 1500 calories. She now can drink water, soup and protein drinks (she prefers Orgain with less sweet) from the mouth with no problem. She just went to her dentist for a post radiation check up and no cavity found. She using her floride tray daily and brushes 4-5 times a day with dry mouth toothpaste. She scheduled to see a speech therpist next week, not sure why since she has no problem speaking but docs want her to get checked anyway. She still not able to eat solid food because she complained the food get stuck in her throat and maybe the speech therapist can help with this. Her PET scan is scheduled in 2 weeks and I am very nervous about it since she still feel a very mild numbness in her right side of her face. It has been the most scary 5 months of my life and wish nobody has to go through this.