If her eyes are reddish then she is definitely a lutino.
However, it appears there are missing feathers around the eye -- is that the case?
Would you post a close up picture of her eye area please?
You need to have this budgie in quarantine away from your two males.
Additionally, you should house her separately after quarantine.
Quarantine means housing the new bird in a different cage in a different room than the current bird (as far away from the room the current bird is in as possible) for a period of 35-45 days.
Budgies mask symptoms when they are ill. Symptoms may not show up for over two weeks.
Often you will not even realize your bird is not well. Many budgie illnesses are airborne which is why you need to quarantine your new bird in a completely different room.
Quarantine - Is it Really that Important?
Quarantine Your Birds
Do not put anything in her cage that could be construed as a nesting site.
A heartfelt plea to forum members new and old
Tips For Discouraging Breeding
Before You Ever Consider Breeding Your Budgies
Guidance for Breeding Advice Threads