If chicken and rice is not doing the trick you could try white boiled fish and little rice

My dogs love the fish

My Rosie was very poorly a few weeks back with severe diawotsits , including loads of blood loss.

The vet gave her antibiotics for 5 days, she had fish and rice in tiny amounts to start with, then we increased. After 5 days she was all good in the poo department.
Don't worry if Ruby does not go to the loo for a couple of days, I think we waited about 4 days before Rosie passed anything.
Thankfully they recover quickly, my Rosie is now back to a good weight after losing over 2kg during her poorly tummy.
Hoping your Ruby makes a speedy recovery, I'm sure the family will be fine

We have never got anything from the dogs in 25 years.
Take care Jo