If you can feel egg inside..stand her bottom in the bucket of warm water for a while and then gently massage a bit of vaseline around her vent.
If it looks like there is a little bit of tube poking out of her vent, it is prolapse...and then again vaseline treatment and you can carefully push it back in..but this is quite likely to repeat and if it does it maybe better to give her bad news as she will never be anygood anymore... I tried to say it gently :-\...