We can ask for forgivness of our sins after death? We can convert to Christianity after death? Comedy.
If you were right, no one would ever go to hell. That just isn’t Biblical. If you can point out verses that say a person can become Christian after death, please do so.
Catholics pray to Mary all the TIME for her help with those who have died.
Perhaps THEY can answer your questions a LOT better than this poor, deceived (or deceiving) Prot could EVER hpe to!
Many years ago, I did work on heating and cooling systems at a convent called the sisters of the perpetual rosary. One of the folks who worked there said they prayed for the living and the dead. I just know that the Mother Superior was NOT a woman *I* would have ever made disagreeable.