A.H.
If you have the space in her room put both beds in at once. We did this with our toddler and it worked great. We gave her the option each night, which bed she wanted to sleep in. She literally alternated each night, but it worked great. That way she didn't feel pressured and we didn't feel pressured. She still felt secure knowing her crib was still there if she wanted to sleep in it. It took about a month before she was choosing the big girl bed every night and we moved the crib out. Good Luck!