If you are planning to move a hen setting on eggs you are risking a problem and this close to hatch may cause more problem than it prevents. My preference is to either move hens early or move them after they have hatched. Hopefully the move works for you but you should have a plan B in place in case the broody objects.
X2. I have never had a problem moving hens. But it is common for them to reject. If you do decide to move her put her in a very dark place so she cant tell shenismin a different spot.