you can still get her to sleep on her bed but you'll have to toughen up first!
she will whine and cry for a few nights but it will go away.
the plus side of this is if you get her used to sleeping by herself you can get her to join you on your bed on those "spare" nights that you want to be sleepless
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i put my foot down and did this with yogurt when he was a puppy and now he gets it when mommy wants company and when mommy doesnt. its a treat!