Where's the Bible say this?
God has communicated with many lost people throughout Scripture with the expectation they'd hear and understand Him...Adam, Eve, Cain, Saul, many others...all of them people whom the Word gives no indication were in any way enlightened or empowered by God to hear and understand Him when they otherwise couldn't. Ditto unbelievers today -- it appears God expects them to understand and believe the Gospel when they hear it and they're condemned if they do not. No indication, again, of God needing to enable them to hear and understand it first (much less to believe it).
Sure it would, if that were the case. But that's not the case. I feel very sorry for Meshak but have no illusions that she's a helpless victim here. SHE is the primary cause of the blinded condition she is is, by having refused to receive a love of the Truth, even after having it shared with her dozens of times (and that's just here on TOL...who knows what exposure to the Gospel she has in meatspace).
If that were true, you wouldn't have phrased this as cautiously and thoughtfully as you did.