My mother has cancer in the throat area that one doctor has said already metastasized in both lymph nodes? What course of action should we take?

Sounds like. Oropharynx (base of tongue, tonsil, hypopharynx, supraglottic larynx as primary, there are chains of nodes on both sides of the neck, the more & the bigger involved, the less favorable. Hx: smoking/alcohol: if not hpv genome check in tumor. Standard: chemo/rt. Some prefer chemo first, then chem/rt with neck dissection to follow, especially for residual nodes.