[coksiw]

The way I see it is that We preach the truth and we practice it. It is not our duty to send people to heaven or hell. It is OK to not know something. It is typical of human to want to answer all questions and know everything, but in reality, and humbly, better to accept that some things belong entirely to the Lord.
If I were her, I would keep my mouth shut up regarding those that didn't and are gone, and keep encouraging people to be baptized in Jesus' Name.
Sometimes, it is OK to say "I don't know" or "I can't tell at this moment", and steer the conversation to what the Bible says for us, the living.

I came from an Assembly of God church, and I did receive the Holy Spirit there speaking in tongues, and I also saw other getting it, and walking in Holiness moved by the Spirit, even though it was taught from the pulpit much.
I have known also of cases of baptists Scholar receiving the Holy Spirit speaking in tongues and keeping it as a secret for years.

God deals with those that truly seek him. Sometimes the fear of being wrong when leaving some traditional interpretations and other traditions don't let them move forward, especially as they get older and more careful.