It is not known exactly how many years the Virgin Mary lived after the ascension of her Son, Jesus, but she was active in the Church, as it is related in the Acts of the Apostles.
Jesus' apostles began celebrating Mass shortly after his ascension and the Virgin Mary likely attended it.
For Mary, adoring Jesus in the Eucharist would have been a touching moment, feeling the real presence of her Son under the appearance of bread and wine.
St. Peter Julian Eymard wrote a series of meditations on the Virgin Mary, compiled in the book Month of Our Lady of the Blessed Sacrament. In it, he imagines what it would have been like for Mary to see Jesus in the Eucharist.
What Eymard proposes is not based on any evidence, but he simply reflects on what it would have been like for Mary to adore the Eucharist, as she may have during those early years of the Church.
When we approach Jesus in the Eucharist, may we cultivate the spirit of Mary within us and humble ourselves before our God, but most of all, before our Beloved.