Would I be happy if a loved one would go flying on his/her brand new PPL?
Yes. I'd keep an eye on what and under which conditions, lend a hand as a somewhat more experienced aviator, but by all means a new PPL not only should but must spread her wings in order to get experience. It's difficult to do so if you're not flying.
Once had an interesting case where a wife of a fresh PPL would refuse to fly with him on the grounds that he was "clumsy at home so how should I trust him to fly an airplane safely"... apparently she had agreed to let him have lessons fully expecting he would fail and give up. Well, he's flying with someone else now
