Help please!

Sarah

My 15 month is just refusing to sleep in her crib anymore. I don't mind it really, but I just don't want her to get into a habit of ALWAYS sleeping with us. She use to get up crying in the middle of the night but would immediately go back to bed, now if she knows she's in her crib, she'll cry until we bring her into bed with us. Any tips on how to get her back to her bed? I'm willing to try anything at this point.