Is it fine, if the mother hamsters decides to sleep separately from its babies?

[Shina]

Hi, it's Shina, from KK, Malaysia. My hamsters just gave birth last week on Friday, she began to sleep separately from her babies now, is it normal behaviour? I've been giving her lots of food and water, but she stores them separately from her babies too. She will go back in and hustle with the babies in alternate times of few hours but otherwise, sleep alone in another corner.