M.H.
start by haveing her put her stuffed toys to bed in the toddler bed the power of illossan is great when she see they "slept" through the night safely she should be less hessante on sleeping there her slef as well as try to get her to nap in the bed and put the baby down in the crib tell her it is time for your sister to sleep in the crib and mommy needs you to be a big gril and sleep in your own bed so you can help mommy wacth your little sister