2 Mothering cats?

I have a female cat, Chloe, that had one kitten that didn't make it.  Well a few days later my other cat, Fluff, gave birth to a couple of kittens.  Now Chloe is trying to get in the box with the kittens and Fluff.  She's trying to nurse the kittens also.  I don't know what to do both cats get along very well no problems but what's best.    

Thanks 

Char 

As long as Fluff doesn't mind, I don't think it's a problem. Cats that are close often share nursing duty.

Im agree with Savethemoms.

Good luck!