R.M.
I completely agree with the previous post. It is just a speed bump and you need to let her practice staying in her crib by herself. The Sleepeasy Solution by Jennifer Waldburger is a great book to help you out with sleep issues if you feel like you can't do CIO cold-turkey. We did this with my daughter and she's still a great sleeper(that's not to say we haven't had a few bumps here and there but nothing major)- a few speed bumps are inevitable but she can return to her previous sleep habits with a little pracitce (on her part) and a consistant plan (on your part). The first day or so will be rough but you can do it!!
Good luck!