The flea treatment the vet gives should kill all her fleas. Yet she can get reinfested if she goes back outside. You can ask the vet for flea prevention that you give monthly. The product the vet uses will be strong and really should get rid of the fleas.
I would not try to bathe her at this point. It would be very very stressful for her. She also will need to rest and recooperate after her spay surgery.
I would not try to bathe her at this point. It would be very very stressful for her. She also will need to rest and recooperate after her spay surgery.