Its almost as though dd has an alarm clock in the cot with her. Every night at 10.40 pm and then 1.10 am she wakes up.
I understand about sleep patterns etc. but she doesn't go to sleep at the same time every night. Depending on when she's napped in the day - sometimes she's in bed and asleep by 7 pm. Sometimes we put her down later and she doesn't go to sleep for a while so it can be 8.30 before she's asleep.
Any ideas why she's waking ?