I agree with MsB , cotton.
Part may be it’s her first litter
Part May sense a bad condition
My cat Fluffy Snowball was my first person . White
Her first litter she had 5. The biggest and most aggressive baby annoyed Fluffy profoundly and she was continually moving that kitten all over. Once I found him in the bathroom trash basket!
But the others had a difficult feeding with him there pushing them away
“Once I found him in the bathroom trash basket!”
too funny!
My second litter had two mean girls. That’s what we ended up calling them. They would actually pull the other kittens off of a nipple to get it. There were five kittens so there were plenty of options. They were just obnoxious.
I figured if I hadn’t taken Milky Way in from the forest, those would have been the ones to survive.