Don’t you remember that the BoM says that people that baptize infants are going straight to hell? If the LDS Church said that Infant baptism is fine, then they’d be going against the BoM.
Along those lines, what in the BoM would the Pope have to embrace in order for you to consider coming back to the Catholic Church? Is it what is contained within the BoM, or is it just the idea of the BoM as a symbol of all things Mormon?
A month or so ago, my younger sister called me while in seminary asking me to recite the Lord’s prayer. I did, and I heard the people in the background laugh and, as I finished up, a triumphant roar. Apparently they were playing a game where their team had to recite the Lord’s Prayer for bonus points, and since none of them knew it, they called me. They repeated me line by line, and won.
I asked them later why they called ME, and they said “because you’re Catholic! We KNEW you’d know it!”. I responded with “But it’s the prayer Jesus gave Christians… Why don’t you know it?” and they said “Because it’s not all that important”.

For those that aren’t familiar with the LDS Church, high school aged LDS kids go to something called Seminary, which is a 4-year bible study type program. A part of the program is having them memorize certain passages in the scriptures. Of all of them, The Lord’s Prayer is not one of them.
I continue to pray (spontaneously AND by rote) for my family. OP, I’ll pray for you too