she keeps moving them about

My cat sassy had her litter 2 days ago, she`s had 6 and its her first litter.
The thing is she had 3 of them in the cupboard in my bedroom then i put her in her box and she had the other 3 in there but now she`s trying to move them about. At first she put them back in the cupboard and now she`s trying to get them in the drawer under my bed.

Any ideas why she`s doing it and what i can do without locking her in one room.
Also my other cat is hissing at the new mom and wont go anywhere near her and she`s absolutly petrified of the babies
I will put some pics up if i can figure out how to do it.

some cats if they dont feel safe they will try and move there babys . the other cat shouldnt have acess if shes hising etc. as this can make the new mum nervous, she is probley hissing because the new mum smells different. if possible do confine her to the one room where she has limited places to hide the babys , but at the same time make her feel safe.