I drove with my children the same day I passed my test, I was young too. If my mum had tried stopping me I wouldn’t have listened.My worry is those young innocent children. If I was her mother I'd be stepping in. No way should she be driving so soon with them in the car.
Why shouldn’t she drive with her children if she has passed her test? I would imagine like anyone else the first few solo drives will be to the local shop not speeding up the motorway.