Do you have any hobs in with her? If so then this is more than likely the reason. Nothing to be concerned about it is just the norm. If it gets any worse put her away from the hob for a while to give her a rest.
Happy Hunting Jamie93
Don't worry about it at this time of year mate. Keep them fed and try to exercise them as much as possible and they will do the job to the best of their ability
Happy Hunting Jamie93