C.H.
Dear K.,
I aslo have twins, but boys. They are 20 months old. They just started climbing out of their cribs too. I was scared for their safety and my husband was telling me that they would be fine, it will make them tough. I didn't go for it. I decided to go ahead and keep the crib in their room, but since their crib is convertable I took off the main gate and put up a safety side that you can buy at wallmart. They will still crawl out every now and then but all you got to do is to keep telling them "no! it is bed time. Let's go to bed!" and put them back. Eventually they will learn that when the lights are out then play time is over. So, I hope that helps you out some. Good luck with the girls!!
-C.