
I would not leave her alone with the pups just in case and a trip to vets sounds like a good idea,
my EBT turned on her only pup withing the first week of having him after thinking all was going well she then turned and tried to bite the poor boys head off we tried to get her to settle with him after vet said she was ok but im affraid we mostly hand reared the poor chap as mum just wernt interested in him at all and you could see her turning withing 10 minutes of putting him with her, it really was not nice so i would be very careful and watch her like a hawk,
i could also be wrong here but maybe the pup being at eye leavel with her made her grumble and snap i know my girl never liked her pup looking her in the eyes, sounds nuts i know but was just little things i noticed at the time,
best of luck and congrates on your new litter, im sure others will be on to give you some better advice than mine also so keep checking in xx