How do I get my 68 year old mother to visit me after deportation.

I am a US citizen. About 10 years back my mother and father both respectable citizens in India were coerced and threatened to obtain a visa on a fake passport and bring 2 children with them to US as their own children. They were caught in US and deported with a 20 year ban. My mother is 68 now, my 8 year old daughter was recently diagnosed with a rare and aggressive brain tumor. My daughter has undergone two brain surgeries and is on chemotherapy now. We also have a 7 moth old at home. Life is a mess and we need her here to help us out. She also is extremely anxious to meet her granddaughter who so severely ill. is there anyway she can come temporarily?