Remeber that you are the leader, u make the right environment. You invite her into your life/party!
In the midgame section of the forums, u can find more then one topics about having good conversations, u should take a look there!
A few tips though,
Statements own qeustions.
Make more use of statements then qeustions, like this:
I love this great weather!
Can't wait until im going on vacation! last year was so awesome because bla bla bla
These statements make a person respond with an answer on wich u can continue.
It will take a time to learn, but u need to try to find these topics when talking.
Like, Talking about great weather and then u start talking that this great weather makes u feel being on vacation or whatever

And so u bring the conversation into a new topic!
On the part with the mental block. I don't got a answer on that, but i know what u mean. A real example of me a few months ago.
Girl i knew when i didn't do PUA yet, liked me and i liked her, i did alot of escalation on her to get her, but she had a boyfriend and i wanted them to break up. It worked after a loooong time, but after her break up, she decided that she liked the freedom and told me she didn't want me.
4 Months after that, i started PUA 3 months ago then, she came at my place, she wanted to see me badly, but i had such a mental block on touching her, it was scray, i just could NOT do it. So strange so i know that feeling.
bUT u date girls after u got to know them? Because when i number close a girl, i text and chat a bit with her and then within a WEEK i try to set up a date with her.
Then K-close on date, and well then it depends on what i do.
Hope i helped a bit with this.
If u got qeustions u can send me a message
Goodluck!