Mama turned aggressive on babies?

so mittens has 1 month old babies, just turned one month 2 days ago... I brought two to see my dad, right upstairs and she went crazy on them, like she were to fight an adult cat... Hissing, growling, smacking and I wouldn't doubt she would try to bite one... She even went after one I haven't even took upstairs or held within a few hours... What do I do??? I'm worried to leave them alone with her! I thought about maybe getting her scent on something like a towel and rubbing them with her scent and then trying to see if she approves, but it still doesn't make sense as to why she attacked the one that's been with her, not me. I am so confused and worried... Please help!

These kinds of situations most of the time have to do with smells and the mother's aggressive protectiveness, even though it doesn't make sense because they obviously are her babies.  Yes, do try to rub them with her towels and such and then just sit across the room with the babies next to you and see if you can get them to cry a bit and hopefully mom will respond with mother's instinct.

You don't think there is a possibility she is going into heat yet?  Perhaps a spay appointment is in order soon, might calm her down. 

I tried the towel thing with her scent, it worked for a minute, she let three feed for a couple of minutes, then she hissed and swatted at them again while they were just sitting there, they had been done eating for about a minute by then....

Any other suggestions??? I tried the towel w mama scent... Didn't work... I tried scrubbing my hands clean and petting mama and then rubbing the babies entire bodies... She still went after them. They hid til I put mama out of the room, then they would come out...

Poor girl, she must be terribly confused by these strange smelling kittens. Put vanilla under their chins and at the base of their tails, and mum as well. Then everyone will smell the same.

Thank you both for your advice, it took about a half hour or so after cleaning my hands good and rubbing them down, including mama that she accepted them... I think she is just exhausted from being a mama... She has been distancing herself from them until it's feeding time. Watching them from afar while they play. She has been seemed better behaved with them since that night though. Whew!

Oh, thank goodness, hopefully things will stay calm now. 

So far so good... And thank you again for your advice I appreciate it