So I saw on a post the other day, this guy talking about how this SG "was a total rude ass bitch", which struck me as odd because I have read some of her blog posts and she seemed very nice and down to earth. So I went on this SG's sets, looked up the guy's comment, and didn't see anything offensive or such, but she hadn't "liked" it or commented back.
First off, if you are only commenting because you want the SG to notice you, you aren't giving her a real compliment, you are giving her an obligation, one which she doesn't have to pick up if she chooses not to. Second, on a lot of these sets, some of the comments can get buried, especially if it is a very good set. Chances are, she just may have missed it.
And third, really? Just because she didn't validate your ego, she's a bitch? Look at it from her point of view. She's an alternative model. She may do it because she enjoys it, but it's also a business. She may get compliments thrown at her constantly, and I'm sure that some of those, when she responded nicely to them, took that as she was interested in them and then they became creepy. So, with a lot of these women (I'm guessing, since I'm not one, but I think I'm right), they have to balance being friendly and engaging with being protective of themselves. Guess what? If her "creep radar" pinged on you, then maybe she chose not to acknowledge your compliment because something felt off. And, judging by your reaction to her "supposed insult", I would have to say she was right.