She will stop producing milk. Animals stop producing milk when it is not getting drained. Humans are the same way. Sorry the little ones didn't make it :(
What Happens If The Kittens Die But The Mother Cat Still Has Milk?
How long did it take for the mama cat to stop producing milk a farrel cat came up after her babies died an shes so full of milk I want to be able to help her stop producing the milk
The mom cans give the milk to other cats