24 Let the inner ear of the virgin also, your holy child, hear these things. I shall see how far she goes before you in the Kingdom of That King: it is another question. Yet you have found, mother and daughter, Him, Whom by beauty of chastity ye ought to please together, having despised, she all, you second, marriage. Certainly if there were husbands whom you had to please, by this time, perhaps, you would feel ashamed to adorn yourself together with your daughter; now let it not shame you, to set yourselves to do what may adorn you both together; because it is not matter of blame, but of glory, that you be loved both together by That One.
But white and red, feigned and laid on with paints, you would not use, even if you had husbands; not thinking that they were fit persons for you to deceive, or yourselves such as ought to deceive; now therefore That King, Who had longed for the beauty of His Only Spouse, of Whom you are members, do ye with all truth together please, together cleave unto; she with virginal chastity, you with widowed continence, both with spiritual beauty. In which beauty also her grandmother, and your mother-in-law, who by this time surely has grown old, is beautiful together with you.
Forsooth while charity carries the vigor of this beauty into things that are before, length of years causes not in it a wrinkle. You have with you a holy aged woman, both in your house and in Christ, whom to consult concerning perseverance; how you are to fight with this or that temptation, what you are to do, that it may be the more easily overcome; what safeguard you are to take, that it may not easily again lay wait; and if there be any thing of this sort, she teaches you, who is now by time fixed, by love a well-wisher, by natural affection full of cares, by age secure.
Do you specially, do you in such things consult her, who has made trial of what you have made trial of. For your child sings that song, which in the Apocalypse none save virgins can sing. But for both of you she prays more carefully than for herself, but she is more full of care for her granddaughter, for whom there remains a longer space of years to overcome temptations; but you she sees nearer to her own age, and mother of a daughter of such an age, as that, had you seen her married, (which now is not lawful, and far be it from her,) I think you would have blushed to bear children together with her.
How much then is it that now remains to you of a dangerous age, who are on this account not called a grandmother, in order that together with your daughter you may be fruitful in offspring of holy thoughts and works? Therefore not without reason is the grandmother more full of care for her, for whom you also the mother; because both what she has vowed is greater, and the whole of what she has just now begun remains to her. May the Lord hear her prayers, that you may holily follow her good deserts, Who in youth gave birth to the flesh of your husband, in old age travails with the heart of your daughter. Therefore do ye all, alike and with one accord, by conduct please, by prayers press upon, That One Husband of One Wife, in Whose Body by One Spirit you are living.
Source: On the Good of Widowhood (New Advent)