Hi! I am also unbaptized and share similar problem with you and your mom. God Bless!
To me, I kneel down on the pew while others are going out for the Holy Communion. I pray and meditate on the Passion of Christ as well as the glorious Resurrection. I meditate on the Communion prayer in the missal which is often taken from Psalms.
I strongly suggest undergoing spiritual communion. Spiritual communion, as its name suggests, is not a physical consumption of the Host; rather, an individual invokes the coming of the Holy Spirit to cleanse his soul and welcomes the entry of the Eucharist if He doesn’t mind. I always tell Jesus to descend to my heart and rejuvenate my spiritual life, guiding my faltering steps in life and combating all kinds of Satanic influence in case of temptations with the grace of His Holy Communion. I always tell Jesus that although I am unworthy of partaking the Precious Gift as others do, I still earnestly wish that I will be in physical unity with His Host as soon as possible, and ask Him bestow upon me the graces of Baptism and Confirmation as soon as possible. I ask for pardon for those who do not genuinely believe Jesus and His mystical Eucharist, including Christians from other denominations and non-believers, and also Catholics who are weak in faith. I ask for pardon for blasphemy of our world. I meditate on the content of Eucharistic Prayer while others receive their Holy Communion. I ask Jesus to grant me the necessary blessings to give glory to God in my secular life after I leave The Holy Mass. I beseech Jesus to dispatch my Angels to receive the Holy Communion in front of the Altar (if they can ).
MOST IMPORTANTLY, I THANK GOD AND JESUS for the awesome Sacrament, a Sacrament beyond human reason. ALWAYS SAY THANK YOU. There are many people in the world who desperately want the Eucharist but are under religious oppression.
Or, the most simple way of uniting with Jesus during Holy Communion is to devoutly stare at the Tabernacle or the Host (which is in the priest’s hands). Say nothing, do nothing. Simply humble yourself and invite Lord to come into your heart.
Do not only focus on your worldly needs during Holy Communion. Holy Communion is a time of Jesus, bot a time for you to ask for this or that graces. Let Jesus guide, comfort, defend, protect and strengthen you during this important moment. Let Our Lord’s affection fill you. Put aside all your worries and concentrate on the Miracle which Our Lord established 2000 yeas ago and ordered His Apostles to pass on to you.