It is a difficult thing to live through Mark, but after reading your post there is validity in what is said. When my son began spiraling downwards (at 17) from the upbringing he had, my heart sank and I was before the Lord constantly.
The Lord brought me to the understanding that the relationship between my son and Him, was exactly that- between Josh and the Lord. I could pray for Josh, I could continue to speak in the ways of the Lord, but I wouldn't ever "make" Josh understand or accept the Lord's way- only the Lord could and in His time would.
However the relationship between me and my son had turned so sour and it seemed we were at constant odds. I could not abide by his actions and out front rebellion against me or God. The Lord gave me Matthew 10;34, which honestly grieved me even more.
Do not think that I came to bring peace on earth. I did not come to bring peace but a sword.
It took me two years to realize I was being a bad example. I was demonstrating just as much worldly attitudes and actions by my behaviors and words as my son was in his friends, music, and drug use. At first I didn't believe that, for I knew Josh was in straight up opposition to the Lord. Yet, by my constant "defense" of the Gospel I presented myself and Christ as hostile, overbearing, pushy, and self righteous. This gave Josh ample ammunition as to why he wanted nothing to do with Christianity.
So by putting on the world and leaving aside the clothing of love, humility, peace, patience, kindness, compassion, longsuffering...and as you know the list goes on, I continued to be "Mommy Dearest", as Josh would so often call me.
I'm so thrilled that the Lord brought me to see my own actions and behaviors during that time. I'm so disappointed in myself over the poor representation of my Lord and the impression it left on my adolescent son. I now pray for Josh. I demonstrate that which I should around Josh, love, kindness, compassion, and the such. I have found by acting this way the Lord gives me the patience and longsuffering I need to deal with the young man.
Josh knows the rules and boundaries in my home have not changed nor are they flexible. The house sits on Joshua 24;15. On the other hand I have to accept that Josh has the right to come to his decision as it is also stated in Joshua 24;15.
And if it seems evil to you to serve the LORD, choose for yourselves this day whom you will serve, whether the gods which your fathers served that were on the other side of the River, or the gods of the Amorites, in whose land you dwell. But as for me and my house, we will serve the LORD.
I always have to keep in mind, that before I began to walk with the Lord in a personal relationship, I was like Josh. I have yet to meet anyone that wasn't dead before Christ. Our children don't get special privileges just because we, as parents, follow closely to our Lord and Savior. Christ makes each accountable for their own acceptance or rejection of Him.
Have a blessed day.