Mendip
In case you are looking for something to do y get out of your place for a short trip you are welcome to come and visit again if you want.
Tell your daughter that her favourite little girl here is now the proud mum of 4 pups born today or last night.
As for letting Anna stay inside, I would just let her in and keep Dan separate for a while while the others sort themselves out and then let Dan join the pack again.
Dan wouldn't need to deal with Anna as the rest of the pack would probably protect her.
You can only do so much and then they need to sort it out.
As Caesar Milan says stay calm and be a good pack leader!