It would be in the best care of the kittens for you to keep them at your home away from Reilly and rehome Reilly. It may sound cruel- but it's really best for them. Since she has aggression issues- you want to seperate them from her before they also develop them. Also, there is still a chance that they may not develop the allergy- why risk it by putting them back with Reilly when they are old enough to be weaned.
I would recommend keeping them with you and providing them with KMR and food- they will do just fine- they're old enough..and you can also start socializing them now that they are away from their momma- you can start developing and encouraging good behavioral habits from them now..