Hello I am Dr. Joey. Thanks for trusting me to help you and your pet today. I am a licensed veterinarian with over 16 years of experience. I look forward to working with you.
After two weeks, I would expect the infection to be entirely resolved and she should be doing great. So, if the infection/wound is still present this may suggest that if this is bacterial (not fungal or an atypical infection) that it is resistant to the current medication and a medication adjustment is needed. A culture/sensitivity panel as performed by your vet is indicated to know exactly what bacteria is present and to find out what antibiotic will work to cure this. This does often happen with bites because mouths house amongst the worst, most resistant, bacteria.
Being lethargic as you noted we do need to determine if she is in a critical situation such that you cannot wait until tomorrow. I do not know if the lethargy you note today is related to the previous infection. IF she is so profoundly lethargic you cannot rouse her or she will not even get up to eat/drink or use her box, then this would be a sign to have her seen today. AS well if she has moderate vomiting, diarrhea or any difficulty breathing then you should have her examined today.
If she is quiet but rousable and have none of these severe symptoms, then you could safely monitor until tomorrow and then have her seen first thing. I always recommend err on the side of safety; so if you are quite concerned, then please have her seen on emergency today.
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