We see things differently in some areas, Alex. Heresy at it's root means "force." If you look it up in Thayer or Liddel-Scott you'll see that the very first definition is "the act of taking, capture; to storm a city, to take by force" (hairesis - G139). It can also mean sect or choice. We have narrowed this word down to ALWAYS meaning choice in our modern religious culture. If somebody chooses a path different from my own, I might call them a heretic. But in the NT, I can show that heresy can mean a sect (Acts 15:5) and also where the idea of force, pushing a lie onto others...
2 Peter 2:1 But there were also false prophets among the people, even as there will be false teachers among you, who will secretly bring in destructive heresies, even denying the Lord who bought them, and bring on themselves swift destruction.
Notice how they bring in destructive heresies, by stealth... force by stealth. But the thing is, it isn't in the definition of the word that is has to be a lie that is being forced, one can have the truth and be forcing it on others and be a heretic. Again, I realize that is not how we use the word in modern terms, but that is how it was taken by those Greek speaking Christians late in the first century and into the second. It was then, that the word began to narrow and heretics began to be killed for what they believed... but the truth is, the ones yielding the axes were the ones forcing themselves on the others, the heretics weren't the ones being killed, the heretics we the ones doing the killing.
My point with this is to say that if we push, force the gospel on others, we are heretics. John 6:44 says God draws a man unto Himself and while SOME OF US are sent ("Are all evangelists?" Paul asks, with the obvious answer being "NO!") most are not. And even if we are... we still must be FULLY discipled first. The idea that somebody gets "saved" and then is now licensed do go out and win souls shows the depth of our current state of immaturity in the body. EVERYONE is expected to be discipled first, TIME must pass so that we can apply the things we learn and THEN we go. Moses waited 40 years, the disciples walked with messiah for 3 full years and Paul, who studied at Beit Hillel, went away for 3 years BEFORE he came back to fully walk in his calling. Why? To learn and grow and apply so that one could be productive in their calling.
Going on a forum and telling somebody how wrong they are and how they are going to hell because of what they currently believe is going to draw them to God? That is the "good news?" I don't think so, sorry.
Perhaps she does... but God did not expect her to walk in that calling without being fully trained first. Nobody skips steps and the fact that she is on a public open forum telling them, unsolicited, that they are wrong and going to hell will NOT bring people any closer to the truth. A person finds when they seek, you don't force them to find.
I have seen more Mormons and JW's pushed AWAY because of how we treat them that I think my comments in the first part of this post should be considered. As for being an armchair QB who isn't in the game... I find that rather humorous. You have no idea whether or not I am in the game nor what position I play.
Perhaps do a little research before making such a statement.
My points stand... walk reflecting the Lord in your words and deeds and when God draws them and they begin to seek, teach them.