A closer view.

Its a genetic trait which I like in some of my hard leaf neos

After look some more I read that low humidity can cause this as well. The leaf curl has seemed to increase a bit since I got it.

It is natural for some leaves to curl. Also, your brom has flowered so is slowly dying. This could take 12 mths but a couple of pups will grow to take her place.

It's still has plenty of flowers to go. Also when should I see the pups? Can they sometimes fail to produce pups?

Very unlikely they don't pup.
Check the last row of leaves as this is where they mostly come from.

I don't see any yet but it's still flowering.

Some pup before they flower.

Your plant will make some pups but I suspect it is a variegated revert of meyendorffii or carolinae which has the trait of curling. The curling in some plants shows up when a soft leaf and hard leaf cross is made.