Do you have any picture so Crystal Gayle, cause she is 56 and her hair is still long and is proof long hair looks beautiful at any age.
Actually I love seeing very longer hair on older woman cause it really makes her look sexy inspite of the grey strands, plus I admire a woman who keeps her long hair against the trend, cause it shows that she is a unique woman who doesn't bow down to the God's of fashion.
I suspect deep down she doesn't want to cut her hair, but may feel she has too. So maybe if you share all the positive messages from us about how beautiful long hair, she may be encouraged to keep her hair long. She just needs people to tell her how beautiful she really looks. So I would say to your mum, if you love your long hair, keep it long, it beautiful thing that you do.
In my opinion, there is no such thing as too old