Maybe - is the answer
She does still HAVE a licence because it was only being sent away for photo renew BUT it would have been wise to take a photocopy of the old licence and the completed form as sent to DVLA. That is what I did last week
If she does not have either the letter from DVLA saying the licence needs renewing or a photocopy of what has been sent away then it will of course be difficult should she have a reason to show her licence to some authority eg police.
5 Precepts of Buddhism seem appropriate. Refrain from taking life. Refrain from taking that which is not given. Refrain from misconduct. Refrain from lying. Refrain from intoxicants which lead to loss of mindfulness