Hi
@petrab1 , and welcome to BYC
How old is you sick RIR and when did she last lay an egg?
How does her swollen abdomen feel, is it rather hard or wobbly like fluid filled?
What exactly can you feel while gently sampling the abdominal area especially between her legs and underneath the vent?
A big and distended abdomen leads me to believe that she is suffering from severe issues of her reproductive system such as internal laying and/or egg yolk peritonitis with ascites.
Could you post some pictures, so we might be able to better assess how to help her?
After the warm epsom bath, was she able to poop?
As
@HeatherKellyB already suggested, the warm epsom bath and additional calcium should help to push an egg out, in case there was a stuck egg in the oviduct.