Liquin and acrylics

As I mentioned earlier, I've been seeing a new painting teacher. My friend painted an acrylic painting Thursday afteroon. Friday morning we went to class and the teacher advised her to use a permanent marker on her painting to make it look like lead lines in stained glass. My friend did that, and we all went to lunch together. When we got back to class, the teacher showed her how to "varnish" her acrylic painting with Liquin. I've also seen my teacher have students use turpentine to paint fur on a oil painting that had been drying for two days. Obviously, I've been wondering about her practices. Has anyone ever heard of using Liquin as a varnish on an acrylic painting? I like the teacher a lot, and have decided to do what she wants in her classroom and to do what I believe is right at home. She still has a lot to offer as a teacher...I just want to know what is the correct thing to do? Thanks,
Dayle

Sorry, Crystal, I don't have an answer.
I am one of the most conservative person around when it comes to mixing new things into paint.
I go with the most proven risk-free techniques and materials.
But I am curious now, so maybe someone else will have an informed answer.

Me neither, but I'm curious. If the fir technique works well, see if you can convert it to something in WS Oils without the need for terpentine.

Well, I plan to stick with more conservative things, like using something with more oil in it to paint the fur. Her way uses lean over fat, and I'll only do that in her class, if I have too. Thanks for your help, though.
Dayle