California should build a house or buy a house big enough for all of these kids and their two dogs. Then staff it with caregivers. Then invite family to come visit whenever they want.
Instead of placing them in existing foster homes create one for them. It's uncommon to have to snatch 13 kids all at once. So do a custom job for this batch.
Does it require a GoFundMe aimed at $5 million? There are reports that the neighbors are selling lemonade for the cause. Old fashioned lemonade!
Sounds great, but why stop there?
Why not build them their own man made island
Away from the public eye and media
You could have a zoo on it with animals to entertain the younger sisters and brothers and every month they could have a globally broadcast benefit music festival similar to LiveAid, with all proceeds going to the children