Hang in there. My spouse was diagnosed with Stage IV in her stomach which had metastisized to her liver (1-2cm tumors). After 4 rounds of ECF (epirubicin, cisplatin, and 5-fu using 24/7 infusion) she is in remission with no site of any cancer. Her hair did fall out and she got a good quality wig which the insuranc company helped pay for. She continues to wear it even though her hair is now growing back. She has now been in remission for two months BUT started another round of chemotherapy to make sure it stays away; the new regimen is Oxaliplatin and Xeloda (pill form of the 5-FU) which she is tolerating well.
Just keep supporting mom, we hope for the best recovery but need to be ready for anything. Best advice I can give is to get as many opinions as possible and to do as much research as possible. We have modified her treatments due to input from other area cancer centers.
Are prayers are with you and your mom and just do your best.