Hi , sorry your girl is having this issue very common with mosquitoes who are infected and bugs .
First of all do nothing with pox until they seems wet or I Infected .
Trust me in few week they will go away and never happened again in life. Because once a chicken infect with pox virus then it never happen again
Only monitor If she's fine and scabs are dry .
Give her poultry Vitamin and care also hygiene
In major cases Tetracycline or Neomycin used orally when it's worsen otherwise in dry cases nothing need to use except hygiene and care
My chickens are looking better and better each day. Soon they will have back their brilliant combs. Just be patient. I know that is hard to do.