The crash happened between Manordeilo and Llandeilo in Carmarthenshire at about 10:30 BST on Thursday.
Her family said in a tribute: "Diane was a fun and loving wife, mother and mamgu. We are devastated by the loss of such a beautiful person."
A 29-year-old man was arrested on suspicion of causing death by dangerous or inconsiderate driving.
A woman killed when a recycling lorry and her car crashed on the A40 has been named as Diane James.