things had been going very well for my mom cat and her week old babies untill yesterday, I went in to check on them and one of the kittens was lying in the middle of the floor. I moved him back to the nest box (which is in a cozy corner of our quite bedroom), but a few hours later I heard a kitten crying and found another kitten out of the box, this time on the floor in our walk-in closet, which has no carpet, only a cold hardwood. again this morning she left one of the kittens alone on the middle of the bedroom floor. also i have noticed mom cat is spending less and less time in the box with the babies, she is away from them more often than she is in the box. any ideas why she is acting this way? nothing has changed recently that would disturb her and she is not moving the same kitten, it has been different each time. any thoughts, suggestions?