Sodality of Mary

These are pictures (front and back) of the medal my mom gave me. Originally it was a lapel pin, but that broke. I'm sorry for the quality of the pictures, but I was trying to get a good resolution on them. The above image is Jesus, pointing to His Sacred Heart. The below image is of the Blessed Virgin, hands crossed over her chest, with a crown on her head. Over her it says "Ad Jesum Per Mariam", and under her feet it says "Sodalis Mariae." 

This is the information from Catholic Girl's Guide:

The Object of this Association

The Sodality of the Blessed Virgin Mary, or the Congregation of the Children of Mary, has for its object to assemble its members at the feet of the Mother of God, to dedicate them in a very special manner to the veneration and service of the Blessed Virgin, and to place them under her particular patronage and protection both in life and at the hour of death.
     "It is impossible," writes Benedict XIV, "to overestimate this pious and praiseworthy association among persons of every rank and class." In and through this Confraternity Mary confers on her children two unspeakably great and precious graces - heartfelt love of God and the preservation of their innocence. Then again, girls who join the Sodality of the Blessed Virgin Mary make more rapid progress in virtue, and by their united prayers afford one another greater help. Hence what St. Bernard says of Religious and their state may with justice be applied to the Children of Mary and the Sodality: "In it they lead a purer life; they fall less frequently, and if they fall, they fall less deeply; they rise up again more easily; they walk more circumspectly; they rest more securely; heavenly graces are bestowed on them more abundantly; they meet death with greater confidence, and a more glorious crown awaits them in heaven." Wherefore, Children of Mary, you have every reason to thank God and your celestial Mother for having made you a member of this association.

Obligations of the Members

A good Child of Mary will observe the following duties and persevere in them with fidelity.
1. She will devoutly recite the prayers of the Sodality: in the morning one Our Father, one Hail Mary, and the antiphon, Hail, Holy Queen; and at night, one Our Father, one Hail Mary, and We fly to thy patronage, etc. (These prayers are not binding under pain of sin.)
2. She will conscientiously participate in the exercises of the Sodality;
3. She will keep the Sundays and holy days in a very pious and edifying manner;
4. She will approach the sacraments frequently, at least once a month;
5. She will at all times and in all places show herself to be a loving and docile child of the Catholic Church;
6. She will endeavor, whilst living in the world, to keep to the utmost of her power the statutes and rules of the Sodality;
7. She will entertain and cultivate fraternal charity toward her fellow members;
8. She will lives chastely and modestly, and be careful to keep her good name unsullied;
9. She will fulfil [sic] the duties of her calling and state of life punctually, and cherish a love of work and of retirement;
10. She will dress simply, neatly, and suitably to her station.
11. On the death of a member of the Congregation, the Child of Mary will hear a Mass for the departed; say the Rosary once, and recite daily for a week the Psalm De Profundis, or one Our Father and one Hail Mary.

Indulgences

The principal indulgences which may be gained by members of the Sodality are:
     (a) Plenary indulgence: (1) On the day of reception; (2) at the hour of death; (3) on the following feasts: Christmas, the Ascension, the Immaculate Conception, the Nativity, the Annunciation, the Purification, the Assumption of Our Lady. Conditions: Confession and communion in the church of the Sodality or elsewhere, and prayers for the Church and according to the intention of the Holy Father. (4) Once a week on the day of the meeting of the Congregation, on the usual conditions; (5) once a year, on making a general confession; (6) the associates may gain all the indulgences of the Stations in Rome, if on the fixed days they visit a church of the Society of Jesus, or should there not be one in the place where they reside, any other church or chapel, and there devoutly recite seven Paters and seven Aves.
     (b) Partial Indulgences: (1) Seven years and seven quarantines for assisting at Christian burials, and for attending public or private devotions for the dead. In the latter case, however, the devotion must be approved by the Director.
     (2) Seven years and seven quarantines for hearing Mass on week-days; the same for the evening examination of conscience; for visiting the sick and prisoners and for reconciling enemies.
     (c) A plenary indulgence to all the faithful who visit a church or chapel of the Sodality, on the Feast of the Annunciation, or on the feast of the chief title of affiliated Sodalities; also on the secondary patron's feast, or on a day appointed by the Director when there is no secondary patron.
     (d) These indulgences may be applied to the souls in purgatory, and can be gained by the members in any church on the usual conditions.
The altar of each Sodality is privileged.

It goes on to give the ceremony of the rite of reception into the Sodality, the act of Consecration, Benediction of the Blessed Sacrament, 'Pious Exercises and Prayers for Regular or Occasional Meetings'. It's nice to know what this medal represented. I'm not sure if this was something she did at school (she attended Mount St. Scholastica Academy in Atchison, Kansas, before it was Benedictine College); and I'm not sure if she continued any of these practices during her lifetime.

I'd like to start wearing the medal, but I don't want to wear it away any more than it has. Does anyone know of anything I could use on the medal to help it not wear away?