It is way overdue for the little girl to transition from her well-loved cot bed to a child's bed. I've been teaching her to stay in her bed until morning and she does mostly but with a new bed the temptation to stray may prove too appealing!
My choice would be No. 1, it's not unlike her current cot bed but with lower/no sides, but I think given the choice she would run to the Peppa Bed!
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