Hello. Welcome to hcm.
Yes,she might probably be suffering from infection namely staphylococcus
. If should have been confirmed with cultures but as you have used antibiotic creams,its not necessary.
I advice you to start her on braod spectrum oral antibiotic to cure her from infection. She should not clean the wound. If pus is found,dressing should be done by qualified doctor in a hospital. Water should not be put and should not be cleaned repeatedly as skin needs time to heal but when you clean it,the protective layer formed will be lost and there can be severe infection.