Is she already climbing out of her cot? If yes, you have to take the side off, no? otherwise she can fall and hurt herself. I think if you let her fall asleep in your bed you start to build a rod for your own back. She is almost 2 and a half no? I would buy her her own big girl bed (and hide the cot away for your next baby....), make a big thing aobout it, how she is a big girl now and can sleep in a proper bed, blah, blah, she can choose her new quilt, blah, blah, when we did it for ds he tried to come out of his room for a week, if he did it 3 times we would give him a warning, threaten to shut the door and keep it shut. Took a week. Same thing in the morning, if he tried to join us at an unreasonable hour, take him back, saying softly it is time for bed and not talking too much. Again it took a week. Now sometimes he comes out of his room, but goes back pretty swiftly, if not I threaten shutting the door, and off he runs back. I am really against cosleeping, i need my time with my partner. Once he started sleeping in his own bed, ds became in a way also more mature, entertaining himself in the morning, playing more by himself, a stronger sense of his identity. None of this cosleeping business in our household I'm afraid.