One of my rats had her babies today, she is a first timer, she is a dumbo. earlier today she had 8 live ones and this evening 6 were dead. They didnt look abused but my wife said it appeared as if she was eating one of them. I have her in a 1.2 setup. Is this normal for some first timers? I have had others that have huge litters that live n their first time, what should I do?

Thanks