DD is 2.5 and she whinges in the mid of the night almost every night for as long as I can remember! It varies from little 10 min whines to an hour meltdowns where she would scream the house down. I just had to deal with a meltdown.
I just can't figure out what's wrong with her. Regardless if she had a day sleep or not, sleep early or late, had dinner or no dinner, had sugary food or not, she never seems to have a good night sleep.
It's getting difficult for me now because we have a newborn and waking up every 2 hours plus dealing with her screams and her waking up everyone plus my 4 year old is just too much now.