If she is crawling out of her crib your daughter might be careful with the new railing. Instead of keeping her in at night it will just give her a higher fall when she climbs over the rail... My little boy is 3 and we had a railing on his toddler bed when he was almost 2. He managed to climb up and over and crashed onto the floor. We decided that the one foot fall was a better alternative than the up over the top of the railing, on to his head fall. It's a cute railing though. I hope it works out for her :)