Hmm could be your daughter is teething, does she put her fingers or fist into her mouth? and is she drooling or pooing quite often? or does her poo has those little white dots?
My son also recently keep waking up at night, he is 2 yrs old. dont't know why, then later realise tht he want to be carried to sleep, so my hubby carry him to sleep cos' I got no strength
Another thing is could be, during CNY visitations, your daughters routine could be disrupted thts why now she is trying to adjust back to it, so you have to routine her again, slowly she will adjust back