Will a momma duck forget about her eggs if adopting another duckling?!?!?!?

Theres a duck in my backyard layed eggs, blah, blah, blah. but yesterday we gave her a orphaned duck my neighbor found and since then she hasnt been sitting on the eggs. im worried they might die if not cared for so should i get the eggs and put them in a incubator or just let them be???