Congrats on the new litter!
If Libby doesn't feed the babies, it will most likely be because she doesn't understand that she needs to. I have had a few does that did that. If I have a doe that hasn't fed her new litter, I put her nest box in a carrier that is just larger than the box, put the doe in the box, and close the lid of the carrier. I stick around, to make sure the doe doesn't totally freak and stomp the little guys, but most of the time, the babies and the doe find each other, and the kits get fed. When it seems she is done, I put them all back in the cage. I usually don't have to repeat the process; most does catch on the first time, or within the first 3, anyway.
Chances are, you won't have any problems with her. I have had countless does that didn't want to use the nest box the first time. As you have learned, when the weather is warm enough, kindling outside of the nest box isn't a disaster. Obviously, the babies couldn't stay where they were - they would wind up scattering themselves all over the cage and probably get stepped on. You did exactly the right thing by moving them. Now you need to check on them every morning and evening, to make sure Libby does feed them. Since this is her first time, she won't have a whole lot of milk for the first couple of days. The kits' tummies probably won't look really, really full, but as long as you can see they are getting some, they should be fine. At about day 3, Libby's milk should really come in, and the babies' tummies will be round and full when they've been fed.
Thank you for all your advice, I'm glad someone finally answered my questions haha! But now I have quite a serious dilemma with Libby and her kits. The Tennessee heat got to the litter and killed NINE of them. Now all I have is one kit. I brought the entire nest box inside and he did fine by himself. Yesterday when it got cooler outside I put the box back, and he is still alive as of this morning. Will she take care of just one kit though? Would he be dead by now if she hadn't fed him? I don't mind growing out just one kit, but I don't know if Libby is even taking care of him. I knew it was probably to hot for kits in June, but she was seven months old and someone told me she would be ruined for breeding all together if she hadn't been bred at this age.