You do have a dilemma. I don't know how many chickens you've had to try to nurse back to health, but I've had my share. The most difficult aspect is deciding when it's not in either of your best interests to keep on trying.
I've developed a sort of formula. Whether sick or injured, I give my...
That's fortunate.
Be aware that a heavy worm load may get lodged in the intestines as the meds kill them. This can throw the hen into shock. Be prepared to treat with sweetened electrolytes.
Pay close attention to her poops that they keep coming normally. You may need to do a flush to wash...
It appears you are doing all you can be doing. Sometimes, it needs to be enough that a chicken isn't declining. The yellow poop often points to a reproductive infection, and those can be very challenging to treat. Often they don't respond at all to an antibiotic.
By all means feed her. The only...
You don't ask a dying chicken's permission to save her life. You wrap her burrito style in a towel to confine wings and feet and pry open the beak and do what needs to be done.
What you are effectively trying to subdue and overcome are your own doubts that it can be done.
Tube feeding or syringe feeding are both necessary at some point to help a chicken survive an illness as they become too weak to eat. It's a shame some chickens could possibly be saved if feeding intervention were undertaken soon enough.
Finding the "right tube" isn't difficult if you know what...
She desperately needs an oral antibiotic. Intestinal lining in great amounts can signal either/both a bacterial infection and coccidiosis. Amprolium will only treat the presence of coccidia, not the presence of bacteria. Any chicken that is not responding to amprolium by improving, very likely...