L.
My son was almost 3 1/2, I'm sad to say. But it was good because he made the decision. He gave his pacifier to Santa at the mall to bring to the elves so they could fix it up and Santa could bring it to a baby. He was very excited about doing this and was fine until bed time. He cried for a little while and then went to sleep. The next night he cried harder and longer but finally fell asleep. He's been fine ever since has hasn't even mentioned it.
If your daughter is a caring person maybe giving it up for someone else would work. The Easter Bunny is coming soon. Do you know anybody with a small baby? She could give it to them.