DD is going through a horrible sleep (or lack of!) phase at the moment but it's at night - I've posted about it too if you want a read and to see what others have said.

With regards to your DD though, has she cut her eye teeth? DD cut hers at 18 months and to say it was hell is an understatement. She had problems with sleep during the day and night for about 5 weeks. She would usually end up finally nodding off for her day nap but not without a fight. I often ended up giving her another bottle to help settle her and some pain relief. Besides the odd bottle at nap time, we were very careful to stick to our usual routines for both day naps and night sleeps despite DD playing up so much. Staying calm with her did really help too but I'll admit I always found it hard, and still do, to stay calm at night when I'm tired and need sleep too.

I hope your DD settles for you guys soon