Hey as a Protestant Convert who was almost a Minister I can tell you we ARE Saved!
We have BEEN saved, are in the process of BEING saved, and hope to one day obtain Salvation with our Lord.
Nope, our “works” don’t get us there either (don’t believe that falsehood) we get there by submitting ourselves to will of God by depending on his Grace. That grace allows the Spirit to work though us. When we fall off we go to confession to make sure we have a true act of contrition (ie we REALLY mean it when we ask for forgiveness)
It’s kind of like when some people are “saved” in an Evangelical Church they continue to show fruits of the spirit through their life. But some… seem to “fall away” Although some may think they were “never saved to begin with” they have just turned away from God (He will never turn away from us though). Sometime these people will go down front at a revival and pour out their soul asking for forgiveness and rededicate their life… which is pretty much what we do at confession

same thing different name
About the Grandfather, we can’t judge who is in Heaven or not, and who truly asked for forgiveness with their dying breath… that’s between them and God.
Finally, we believe Jesus meant what he said to the Good Theif “tonight (not next week or 2000+ years) you will be with Me in Paradise” We believe the Book of Revelation when we see the Saints at the Altar of the Lamb offering up Prayers. We believe Bible when it tells us that those in Christ shall never die… So your MIL is asking Christ’s Earthly Mother, the Blessed Virgin, to pray for you guys. I think even if you believe Sola Scripture it’s easy to prove she is in Heaven and praying for us with the others who have gone before us.
Be thankful that she loves you that much!
Sincerely,
Joe