She's able to poop o.k.?
Since they had to cut her open, they instructed you to take care of the vent right?
It looks like the vent is injured from what I can see, I would keep it cleaned and apply vetericyn or triple antibiotic ointment to the scabbing.
The yellow discharge is likely urates leaking, hopefully that will clear up but that can irritate the skin under the vent since she's bare. To help protect the skin I would use Hen Healer (it's BLUE so be aware of that) or you can use something like A+D ointment.
Since they had to cut her open, they instructed you to take care of the vent right?
It looks like the vent is injured from what I can see, I would keep it cleaned and apply vetericyn or triple antibiotic ointment to the scabbing.
The yellow discharge is likely urates leaking, hopefully that will clear up but that can irritate the skin under the vent since she's bare. To help protect the skin I would use Hen Healer (it's BLUE so be aware of that) or you can use something like A+D ointment.