Ah, the last days of pregnancy! Those can be some of the most nervous days in owning a bunny.
It's good that you separated the pregnant doe from the others. Not only will they harass her, she can potentially harm them as well. Pregnant does are extremely territorial. They feel that if you are anywhere near their nest that you obviously must be planning on harming the babies. They will try to distract you from the nest at first, they may even try to put themselves between you and the nest. With other bunnies however, especially females, the doe will take the more direct approach and attack them. This usually starts with a lot of circling, then kicking, biting, scratching, etc. The other female can be left with huge chunks of fur hanging off her, or worse, if someone doesn't step in and stop the fight or better yet prevent it in the first place.
As for palpating, if done properly it shouldn't harm the doe or her babies at all. Once you get the hang of it, it's actually fairly easy.
An easy and non evasive way of telling is to gently feel her belly while holding her in your lap. Have her facing away from you, her rear pressed up against your stomach. Then, gently putting your hand under her front legs, help her stand up on her back legs. She doesn't have to be standing up straight, having her at an angle works best. Then, gently run your fingers over her belly without pressing down too hard. If she isn't too chubby around the middle, you should be able to feel the baby bumps. If not, that's fine. Some females carry a lot of fat around their middles during pregnancy, so you may not be able to feel the kits. If that's the case, don't press harder to try and feel them.
The main thing right now is to provide her with a calm, clean space. Make sure she has a box to nest in, nesting materials, and plenty of food and water.
It will only be a matter of time before you will be a bunny grandparent!
