Hey there guys, I'm new registered to this forum, but I'm already experienced with PU-Stuff, my English isn't the best, cause I'm from germany but I think it's good enough

I could need your help on something:
Every weekend I'm hanging out with my friends, we're partying or relaxing or whatever ... and for about 3 weeks, I'm making out with one girl from this social circle. I met her about 4 months ago and now she belongs to our group and we're often partying together. So 3 weeks ago we were dancing and stuff, I gamed her, we made out. She let me sleep in her bed, we're kissing, touching and so on but not fucking.
Last weekend i saw her again we had a lot of fun, and a makeout in my car i asked her to come home with her and she hesitates, i put in a little freeze out - if you wanna call it so - leaned back grabbed my chewing gum, chewed my chewing gum, we're kissing again then i told her, I would really love to take her home (i said this in a more playful way then i did here, this is just for describing the situation). She said, she would like me to but better not tonight (I don't think of it as an attraction problem, because she's okay with me tongue kissing touching tits and everything). So I gave her a good night kiss, said thats ok and "goodbye then, see you next week, ...do you want some chewing gum for the long way home ?" (CF, humor, no needy everything cool)
All in all I would describe her as a shy girl, in bigger groups she's not talking to much at first, when she knows everybody, of course she's talking, but when i remember her first time in our new group she was more the quiet one.
Soo, the thing is, I really really like her and i know that she likes me. I'm pretty sure she wants me as bad as I want her, but nevertheless she hesitates when it comes to sex. And most of the time I'm the one who starts kissing and touching and so on.(After I started things, she really gets into the mood and is making out with me, too of course) What can I do, to get her to sleep with me (this friday) do you have any ideas ? I'm always building lot's of Attraction when we're together and I'm always escalating physically. Maybe this calls for more comfort game ? What do you think, what would you do (I'm not the big comfort-gamer, my game is more based on attraction so maybe you have some good ideas)
Best Greetings from North-Germany,
Stmeister
By the way, we're both 20 years old.