Here is a recent post I put together on the subject of Mary’s discipleship in this regard:
Mary Ever Virgin.
“Her virginity also itself was on this account more pleasing and accepted, in that it was not that Christ being conceived in her, rescued it beforehand from a husband who would violate it, Himself to preserve it; but, before He was conceived, chose it, already dedicated to God, as that from which to be born. This is shown by the words which Mary spoke in answer to the Angel announcing to her her conception; ‘How,’ says she, ‘shall this be, seeing I know not a man?’ (Luke 1:34) Which assuredly she would not say, unless she had before vowed herself unto God as a virgin” (St. Augustine,
Of Holy Virginity).
The virgin life is superior to married life because it provides an environment for “undivided devotion to the Lord” (1 Corinthians 7:35), a devotion that is “anxious about the things of the Lord” (1 Corinthians 7:32, 34): “how to please the Lord… how to be holy in body and spirit”. This devotion is a sign of sacrifice for the “sake of the kingdom of heaven” (Matthew 19:12) that not all are
enabled by the grace of God to make (cf. Matthew 19:11-12, 1 Corinthians 7:7) and which conforms us to the Virgin Christ.
Catholics believe in works of supererogation. Because of this, we wouldn’t be implying that one course of life is sinful when we say that another course of life is better than it. The married do well and commit no sin, but the virgins do better (cf. 1 Corinthians 7:36, 38). You can take a look at Dave Armstrong’s article on the
Evangelical Counsels if you’d like.
We Catholics see Mary’s virginity as a sign of her discipleship and therefore as a reason for her blessedness:
“Didn’t the Virgin Mary do the will of the Father? I mean, she believed by faith, she conceived by faith, she was chosen to be the one from whom salvation in the very midst of the human race would be born for us, she was created by Christ before Christ was created in her. Yes, of course, holy Mary did the will of the Father. And therefore it means more for Mary to have been a disciple of Christ than to have been the mother of Christ. It means more for her, an altogether greater blessing, to have been Christ’s disciple than to have been Christ’s mother… So that is why Mary, too, is blessed, because she heard the word of God and kept it. She kept truth safe in her mind even better than she kept flesh safe in her womb” (St. Augustine,
Sermon 72/A, 7).
Her virginity also links her with the image of the Church, whom Paul “betrothed… to one husband, to present… as a pure virgin to Christ” (2 Corinthians 11:2). Her motherhood of the disciples does this as well (cf. John 19:26-27 and Revelation 12:17). Seeing Mary as the prototype of the Church and as the Mother of the Church is beneficial to understanding the manner of her salvation and discipleship. Her perpetual virginity, being a bodily sign of her “sincere and pure devotion to Christ” (2 Corinthians 11:3), is a sign to us that what Paul was striving to bring about in the hearts of those to whom he wrote was already accomplished in Mary from the beginning of her life and preserved forever. She is in a special way
the virgin “who follow
the Lamb wherever He goes” (Revelation 14:4).
I hope you have a blessed night! And welcome to the Catholic Church of Jesus Christ! 
Your brother in Christ,
Pete