Don't put her in water, its a common thing to do but it's wet...and you have to dry them. Please try this instead... place her in a doggy or kitty crate, or anything for that matter, put down something soft to lay on for her, bedding, a towel etc. Put the crate in the bathroom, NEXT to the bath. Run the bath as hot as you can, close the door and allow it to get really steamy for a few minutes. She should lay in the first 15 minutes. I was told this method by an avian specialist, and it has saved my girls before. If she doesn't lay right away offer her some water, or a little bread with dipped in olive oil, then try it again. Its much less stressful for them...That egg MUST come out. Try it asap. Good luck and let us know how it goes!
Oh yea, and a water based lube like astroglide works well, but the most you push into her the more likely she is to get an infection.
PM me if you need anything!