Dude, seriously,

Do not be intimidated by this girl. Firstly she cannot read your personality or tell you what type of person you are based on a few dates. That, as far as I know, is not what psychology degrees teach. Even criminal psychology. She does not have a fucking clue what you are going to do next.

If she described your personality I imagine it was by using a general cold read. Derren Brown has a well know example in his book.

If she is going out with you; she likes you! She is attracted to you!

Of course she doesn't want to give it up easily she doesn't want to feel like a slut. She doesn't want to think, she gives it up, you lose interest.

Just keep your confidence, stop worrying about all the gimmicky shit. It has its place but not here.

She is going out with you, she wants to see you, you are half way there.

You sound like a confident guy. Stay with that, don't let her pull you into her reality. Don't second guess yourself.

Not to spout cliches but just act like a fucking man and she will come to you.