Honestly, I think she's genuinely just not ready yet. A failed marriage is a tough thing to deal with, so I definitely see why it seems like she's "stringing you along." If you feel there is GENUINE connection between the two of you, then just be patient. Don't rush her, because that could scare her off.
"Sometimes when we communicate she is really happy other times, doesn't say much at all." -- I think she just can't make up her mind. That, or she just has so much going on when she doesn't say much at all (you mentioned she's a teacher, a coach, and does all this computer stuff to boot. Not sure what the last part means - is she a computer technician or something? lol - but I'm guessing she's definitely a busy woman).
Anyway, I agree about Highlander. lol I've been reading a few threads on here, but only posted on not even a handful. I've seen a few of Highlander's posts. I have actually noticed a number of users on here that are rather...I dunno, trollish