Hi'ya,
Maybe she's hungry?? That's all I can think of....my
DD 16 months has recently taken a liking to taking a sippy cup of milk to bed and it she wakes at 1 or 2 or 4am will cry and shake it as it's empty and point that she wants me to go to the kitchen and fill it up!!

Means she doesn't eat much breakfast though!! Think I'll have to put a slow stop to the refill he he!!

Hope it's a stage for you I think as they enter 'todderdom' they change all the time!!