I have a daughter. If she was 16 and she was being courted by a much older man (let's say 30 year old), I think I would be cautious but I would try not to meddle. A young man can take advantage of your daughter as well. But I'd hope that I raised her right to be able to pick the best husband. In the olden days, didn't parents marry their daughters off or at least choose their suitors?
The verses below describe protecting your daughters from losing their virginity (fornication). I think that's more critical than some older man courting your daughter.
26 Hast thou daughters? have a care of their body, and shew not thy countenance gαy towards them. 27 Marry thy daughter well, and thou shalt do a great work, and give her to a wise man. (Sirach 7:26-27)
9 The father waketh for the daughter when no man knoweth, and the care for her taketh away his sleep, when she is young, lest she pass away the flower of her age, and when she is married, lest she should be hateful: 10 In her virginity, lest she should be corrupted, and be found with child in her father's house: and having a husband, lest she should misbehave herself, or at the least become barren.
11 Keep a sure watch over a shameless daughter: lest at any time she make thee become a laughingstock to thy enemies, and a byword in the city, and a reproach among the people, and she make thee ashamed before all the multitude. 12 Behold not everybody's beauty: and tarry not among women. 13 For from garments cometh a moth, and from a woman the iniquity of a man. 14 For better is the iniquity of a man, than a woman doing a good turn, and a woman bringing shame and reproach. 15 I will now remember the works of the Lord, and I will declare the things I have seen. By the words of the Lord are his works. (Sirach 42:9-15)
Too bad secular people don't understand this. So many women who will never be be married. As time goes on more and more men have realised that the juice is not worth the squeeze. In the past if a women fornicated she would mostly have a child and have no support for it. Now she can use contraception, murder the child or have the government pay for it and force the male to pay for it (also all men by tax which is unjust)
These verses are excellent and all the "mama bears" should read them multiple times.
Marry thy daughter well, and thou shalt do a great work, and give her to a wise man.
when she is young, lest she pass away the flower of her age
Really think about the terms 'flower of her age'.
From Haydock
Ver. 27. Man. The Jews in general embraced the married state in their youth. S. Paul prefers virginity. 1 Cor. vii. 8.
Ver. 9. Knoweth. Lit. "who is hidden." H. --- An unmarried woman was styled Halma, or "hidden." Is. vii. 11. C. --- Pass away. Gr. "abuse." H. --- Some read adultera, (Sixt. V. Jans.) instead of adulta, improperly. It was deemed shameful for a parent not to have his daughter married soon. 1 Cor. vii. 36. --- Hateful. Deut. xxiv.
Ver. 10. Barren. And thus fall into contempt. Deut. vii. 14. If she committed adultery she must die; or if she were only suspected, she must drink the waters of jealousy. Num. v. 17. Husbands would often seek a divorce, on such occasions; which would involve the father in fresh difficulties.
Ver. 11. Multitude, who will accuse thee of negligence. C.
Ver. 12. Body's. Lit. "man's." But females are included in this term. H. --- It was also necessary to guard the Greeks, and pagans in general, against a criminal affection for boys.
Ver. 13. Man. Gr. "woman." Malice is natural to her. Beauty becomes her ruin, as well as that of others. C. --- The Fathers compare women to a load-stone. S. Bas. --- Men who come near them, are greatly exposed. C.
Ver. 14. Better, &c. That is, there is, commonly speaking, less danger to be apprehended to the soul from the churlishness, or injuries we receive from men, than from the flattering favours and familiarity of women. Ch. --- Josephus (c. Ap. ii.) attributes this sentence to Moses, and prefers the worst man to the best woman, as Euripides does in Clem. Strom. iv. C. --- But this is ridiculous. --- Reproach. This explains what sort of good the woman aforesaid has done; she had fostered the passions of men, and brought them to shame, which all the malevolence of an enemy could not have done. H. --- The company of women is therefore more dangerous. C. ix. W.