Since some contributors (Alice, Paul, etc.) have failed to understand my point of view, I'll try to explain:
Assuming that the woman is married with a family, most of us are aware that an older woman's duty in life is firstly to her home and family (Titus 2:3 & 4). And if the woman has lead a virtuous life up to now, what consequences would the introduction of a musical instrument bring, particularly the difficult-to-master violin? Mastery of this instrument entails considerable practice on scales and bowing technique, which unless practiced outside the home (a moral danger in itself!) could rock the most solid marriage and/or drive husband and children out of the house.
Secondly, the time needed to practice could intrude on the older woman's obligation to "teach the young women to be sober, to love their husbands, to love their children", etc. They need lots of time to show them how to keep house and have the right spiritual and mental attitudes.
Even if the woman managed to get around the above and lead a sober life after learning the instrument, the next thing she would want, would be to risk playing with other musicians. There is a great danger to temperament, character, and mode of thought, to which such a lifestyle particularly exposes its followers, possibly leading to loose living, late nights, unserious behaviour and a general decay in morals. We all know how these folk-musicians behave!
No, stick to the straight and narrow path, forget the temptations of music, and content yourself with the purring of your kettle on the hob and the lilt of your sewing-machine in the corner.