I think I'd want to talk about GAing her to enable the Vet to have a proper look. I cant imagine it is possible to be certain there is no FB stuck up there.
If a thorough examination under GA reveals no FB or obvious soft tissue injury and the Vet still suspects a retrobulbar abscess/tooth root issues then skull radiographs could be done whilst Lily is under theGA.
The 'bulging' may be soft tissue swelling. *If* there is a FB still in situ then it'll keep damaging the soft tissue/eye until it is removed.
As for abx, if she were mine I'd want to stick with the Baytril for now. If an abscess were to be confirmed then I'd want to talk with Vet about starting Depocillin and Metronidazole.
In my unqualified opinion I'd want to establish what is going on ASAP so as the most appropriate treatment can be given.
Yep I def will be coming out of the vets tomorrow with more info on what it is/a definate plan of action to find out what it is and treatment required.
Lily seems fine tonight, is eating etc (despite her having lost weight in 2 days) and seems happy enough considering...
I'll def ask them to look fully under the eyelid when getting the Xray done tomorrow. I am certain they'll want to GA her anyway in order to get a decent Xray!
I'll keep you posted but feel happier now I've spoken to you and can stop researching and get some tea now!!!
Thanks x