Not lethargic, eats well. She's alpha so I doubt she'll show she's down until she dies. But her abdomen is so swollen and she didn't poop at all during the night. More baths, tums and yogurt today.
BC (before chickens) I would never have believed that one day I'd be oiling a chicken's vent...
If it goes beyond two days you may want to consider trying to help her pass the egg, or remove it completely. If you Google "egg prolapse" you should find some really good guidance on how to perform either of the procedures. There's a lot of debate about what kind of lubricant to use to help her pass the egg, but to me that's less important than just getting the darn thing out. Collapsing the egg is more risky and should be used as a last resort, but is worth a try to save a beloved bird.
I had one hen with a prolapse. After 24 hours and an Epsom salt soak, I simply massage a little coconut oil around her cloaca and she was able to pass the egg and returned to normal, so I know it can be done.
Good luck!