There is no cure for Herpes. You can only hope the tortoises survive into a latent state. They will always have the virus. Mortality rate is very high. Your options are:
Close your group(pair) and never get any more tortoises.
Completely isolate them and have almost no contact with them except under the strictest biosecurity precautions
Euthanize them, and completely break down their set up and start all over.
It could also be Adenovirus which is just as bad. There is no good outcome unfortunately in this scenario. Antivirals will not rid the virus. Just like people, Herpes is forever.
Close your group(pair) and never get any more tortoises.
Completely isolate them and have almost no contact with them except under the strictest biosecurity precautions
Euthanize them, and completely break down their set up and start all over.
It could also be Adenovirus which is just as bad. There is no good outcome unfortunately in this scenario. Antivirals will not rid the virus. Just like people, Herpes is forever.