I've sequestered Zebra the mom to her own bedroom with the same accommodations. When I came home from work Dot the mom had the same sort of attack even same side. I've left Dot and the Romeo (Clark Jr.) together because it seems Zebra is the aggressor. Zebra has shown she can forage on her own so I'm comfortable with the decision. She has all the same seeds, pellets, treat sticks, veggies, and cuttlebones etc.
Zebra looks like 2 eggs Dot has four. The Quaker looks to have 3. But those I have to remove in a couple weeks one every couple days because I only have one Quaker.
I think both birds will be ok they just got roughed up a bit by a VERY hormonal mom.
So lesson to the rest of you all don't put two pregnant budgies in the same room, before the conures were actually buffers, they were safer before. Left to their own devices they decided to be like meerkats in "meerkat manor" and only one clutch can survive.