Tongue Cancer when Radiation is NOT an option

Hello All...

My mother was recently diagnosed with Cancer of the Tongue. It was surgically removed and The pathology came back with invasion to the lymph nodes and nerve. She had tonsil cancer with metastasis to the neck lymph nodes 7 years ago. She had radiation and was cancer free for 7 years. It came back on the tongue... and now radiation is NOT an option. Has any one had this? What are Chemo options? I heard Chemo is not effective for head and neck cancers... We have to depend on just surgery?! I had to ASK to be seen by chemo... we have an appointment next week. I want to go in armed with information... any help would be appreciated. Thanks