Conservatives are far more moderate in their positions than Joan's are. Conservatives want slow change, or for things to remain the same. Joan, by contrast, wants to turn back the clock in a big way. She is actually a reactionary.
What are you talking about? In so far as you can define a liberal or conservative (it is a pretty abstract attribute and isn't always obvious even to the individual themselves) it's a black and white definition. You're either conservative or you're liberal, regardless of how extreme your views are.
There is left, centrist/moderate, and right, that label parts of the political spectrum. I think this is what you mean GB.
Conservative and Liberal fall within the spectrum near the center. It would be wrong to say that Liberals are Marxist-Lenninists, just because both generally fall on the left side. Liberals have their own ideology guided by the principles of the enlightenment.
Likewise it would be wrong to say that conservatives are NAZI's just because both generally fall on the right side of the political spectrum. One ideology is moderate and the other extreme.
Conservatives are generally defined as "not wanting change", or wanting to proceed slowly. Reactionaries want to return to the past, often one that never really existed.
I label Joan as not a real conservative because her ideology is too extreme.
So who are real conservatives? I would label the majority of Britain's Tories as such, and they are way to the left of today's Republican party.
And again, the majority of Americans self-identify as conservative, yet Barrack Obama was elected. Clearly, today's Republican Party was too extreme for them. But instead of waking up, the GOP has swung even further to the right.