oh, one more thing. she had a cold last week, so i put her nursing pillow under her mattress, so it's on a bit of a slope. now she sleeps with her head slightly elevated, this means she can't crawl up hill and head butt the end of the cot (which is where she always was when i got her up in the night) perhaps she was walking cause she'd creeped up there in her sleep and not cause she was hungry??? so i'm going to keep her mattress slightly elevated for good now! just in case that's it