Indeed, her explanation defies the laws of physics. If you can make sugar evaporate, that'd be some amazing stuff. She likely got her information mixed up.
Have you ever tried Banker's Club vodka? Very good vodka has those characteristics, but the cheaper the vodka, the more off flavors it has. Buy cheap vodka and run half of it through a brita filter, you'll see.
My experience is that they all suck. I have TWC, they suck as bad as anyone. Unfortunately, the telecommunications industry has regional monopolies, so there's not much you can do.
What works best for me is to split the bean and scrape out the inside (where the flavor is). Soak the inside of the bean in vodka for a day, then put the vodka with the vanilla into secondary.
There are multiple ways to count using a hemocytometer, but what I do is count the total number in the four large corner squares, then multiply by 2500. That will give you your concentration in cells/ml. Here's a link that might help:
hemacytometer
If you want to give the beer some honey flavor, I recommend 1/2 lb. of honey malt. Real honey ferments out completely, so it doesn't add as much honey flavor to the beer as you would expect.
If you're using a temp controller, it doesn't really matter. The temp controller acts as a defrost cycle - once it gets to a certain temp, it cuts the compressor. It'll never get cold enough for the actual defrost cycle to kick in.