R.R.
I'm not a fan of going back, and wouldn't put the crib back up but leave the bed in her room and let her sleep on the floor. At some point she will get more comfortable with the idea. Buy her books about moving from a crib to a bed:
http://www.amazon.com/Big-Enough-Bed-Sesame-Street/dp/037...
http://www.amazon.com/Your-Own-Big-Rita-Bergstein/dp/0670...
http://www.amazon.com/How-Will-Ever-Sleep-This/dp/1402743...
http://www.amazon.com/Time-Sleep-Transition-Times-Books/d...
Develop a relaxing bedtime routine for her with bath, rubdown with relaxing nighttime lotion, stories, etc. Darken the room, dim the lights, use a fan for white noise, speak in quiet voices after dinner and slow things down for her, no TV or roughhousing.
Check out some books for you to read on sleep solutions for toddlers.
http://anndouglas.typepad.com/sleepsolutions/sleep_book_r... ~
Sleep Solution Book reviews
And get a her mat like the type they use in preschool for her to sleep on when you vacation and at home, kids can use these through kindergarten, my guy has one for trips away from home:
http://www.bedbathandbeyond.com/product.asp?sku=17307037&...
http://www.potterybarnkids.com/products/animal-nap-mats/
http://www.littlepeoplescove.com/nap-mats-and-sleep-mats....
Hope this helps, God bless.