I'm not certain. There are some question marks in some of her behavior or statements so they will need to be reviewed to see if those things are obstacles or might cause scandal to the Faithful. Under the pre-VII process she might have been passed over. It was very strict. We'll have to see. She was not a theologian but in her life she lived the Gospel more so than any of us. Ultimately though, it is Heaven's decision if Mother Teresa is meant to be an example to everyone. The requisite miracles will happen or not.
I cannot identify with "trials of Faith".
Okay. Have you considered what St. Paul said about persevering to the end in order to be saved, comparing the journey like an athlete struggling to win a race? The best of us will be under constant assault by Satan, especially at the moment of death. Also, consider Christ on the Cross doubting, almost denying God the Father at the moment of His death. He asked why He had been forsaken. These are the trials of Faith.
Sure, and it wasn't until I understood Reformed theology that I knew that God was in total control, He will protect me from Satan and He will equip me with the things that I need. We are not under constant assault by Satan. Satan would LIKE to have a go at us but God protects us. We will win the race because God will see to it.
We have victory through God our Lord. That should be our comfort.