Final answer:
The nurse would assess the interaction as neonatal attachment behavior, with the mother's touch and attention fostering an early bond with the alert and responsive newborn.
Step-by-step explanation:
The nurse's assessment of the first mother-infant encounter would likely be neonatal attachment behavior. The mother engages with her baby through touch, which newborns are responsive to, and maintains eye contact, which promotes bonding. The baby's alertness and responsiveness suggest a reciprocal interest in the mother, indicating the initiation of a bond. This attachment behavior is essential for the baby’s emotional and social development and supports future healthy relationships.