I am a law enforcement officer, and in the last few months, one of our fellow officers took his own life by placing his off duty weapon to the side of his head and pulling the trigger. This was the first news that I received when I entered work that morning. Needless to say, I was in total shock. Later that day, I stopped by the adoration chapel to pray for him asking the Lord to have mercy upon his soul, and to spare him from hell. I prayed a Chaplet of Divine Mercy for his soul and it was during the praying of this chaplet, that these words came to me,
"There are more saved than you realize"
After hearing these words, (which I believe were from the Lord), my spirit is at peace. I believe that in the Lord's infinite mercy, he spared my friend from hell, and that his soul is now in purgatory.
I am continuing to pray for his soul for a quick exit from purgatory.
So, my suggestion to you, is to pray for the soul of that teacher, especially the Chaplet of Divine Mercy. It also wouldn't hurt to have a mass offered for her soul.
I am truly sorry for your loss. Right now I will say a Chaplet of Divine Mercy for her soul also.