You can repeat the soak, if she enjoys it. Give her some calcium which will help with contractions, you can grind up a tums in some moistened feed, or give 1/2 a calcium tablet. Try to lube up around the egg as best you can, if you have some KY jelly, vaseline, coconut oil, etc use your finger to try to work it around the egg. Put her in a low light and quiet area, the more she is able the relax it will help. I'm going to assume that you are sure this is an egg? How old is the bird and do you know when she last laid? If you insert your finger into the vent up to 2 inches you can feel the egg? Just trying to make sure you are on the right track.