Antibiotics do not have any effect on a virus whatsoever, the only reason antibiotics are ever given are to prevent or treat secondary bacterial infections (eye infections, nasal infections, fever etc etc)
Calicivirus is not always carried for life, in fact there is a very high percentage that get it and get rid after 75 days and never carry it, however in that 75 days they can infect other cats in a multicat household and the circle will continue - separation and OCD cleaning is the only way to keep it at bay in a house with more than one cat x
Herpes however is likely to be carried for life in the majority of cats, but symptoms and shedding can be lessened in these cases by a lovely thing called l-lysine x
Keep doing what you're doing with your girl and keep a clean house and a couple of months down the line she may be completely clear of it with no reoccurences

x
i studied the subject when i first started breeding, i wanted to make sure i had all the info on the nasties that can happen x