I would be concerned if a baby stopped doing something she was previously doing, but if a baby stopped temporarily, I would not think anything was wrong. I'm assuming she wasn't ill, or hadn't fallen.
Has she resumed rolling?
We worry when a baby regresses in their development. Meaning for a persistent time they stop doing things they did and revert to older milestones they did at a younger age. I wouldn’t consider a day or even a week to be a concern.