Well I just wanted to post an update for anyone who would like one.
It's been another week and Wanda still can't pass an egg without help. It seems to be getting more and more difficult for her. Her last few eggs I've had to gently help her expel it by pushing the egg toward her vent from the outside. I don't think I'm making the problem any better by doing that but my thought process was she needed to get the egg out asap (had been over 24 hrs since she started pushing, each time). More of her oviduct seems to be protruding with each egg. I'm worried now that her oviduct has more injury going on that can't heal because she keeps having this problem happen over and over.
So I think we've come to the decision to cull her. This is no way for her to live. She's only 1 year old so she has a few more years of egg laying ahead of her and I don't want her going through this pain and struggle almost every day for 3 more years. It makes me really sad because as I've said, she seems to be fine in every other way.
Her egg today had a lot of calcium deposit on it. She laid the egg in the bath and the extra calcium wiped right off with paper towel.
We haven't dewormed yet, waiting for the dewormer to arrive. We have upped her protein to 20% by adding a supplement to her food, stopped feeding treats altogether, I give a vitamin supplement daily now in the water instead of weekly, and we've treated for lice. I stopped giving her calcium tablets last weekend, and she's been back out in the run since earlier this week, besides 3 trips to the tub to lay an egg. But I've been drying her off and taking her back outside right away. She seems happier with her buddies than she did in the house by herself.
So I guess this is my last ditch effort for any more ideas on what I can do for her. I really, really appreciate everyone's help so far! If there's nothing I can do I don't want her to keep suffering. It seems so painful for her

thank you