Does Someone’s Lack of a Near-Death Experience Prove There’s No Afterlife?

Questions about how to proceed with someone who isn’t sure what she’s unsure of about Christianity, whether not having a near-death experience proves there’s no life after death, why Jesus is waiting so long to return, and whether it’s shameful for a boy to have long hair.

• How should I proceed with someone who says she wants to continue reading the Bible but isn’t ready to accept Christ and isn’t sure what she’s unsure of about Christianity?
• What should I say to an atheist who says the fact that he died for a few minutes and had no awareness at all proves there’s no life after death?
• Why has it been such a long time since Jesus promised to return?
• According to 1 Corinthians 11, is it shameful for my son to have long hair?