Here's a semi embarrassing/funny story
When I was a lot younger I did something like that. I didn't realize that there was such a structure to how people did those things, kissing/sex. Like it wouldn't or couldn't be talked about. And being sober didn't help.
so, we go on like 4 dates, and she's a very very traditional girl, and she never comes into my place. I thought it would happen naturally, but sometimes we would stay outside my place in her car for like 2 hours talking. So, the 4th time, I am like we have to kiss, what are we doing here? So, it's like 12 AM and we are listening to music and talking and finally, I am like "Look, I know this is when we are supposed to kiss.....I know we haven't. What I want from you is to just meet me halfway"
She was like omg I have never had someone ask me like that, just tell me what they want and she was laughing, but it worked. We kissed and kissed for a long time, and we were both comfortable. Now, I am not saying you need to do that, but sometimes just putting it on the table helps. You can go for the context and the body language, touch her hair, touch her neck, but if you really aren't ok doing that, just tell her how much you want her. Like stare at her and say I really want to kiss you. Or do you know how attracted I am to you? whatever you do, don't stoping seeing her until you at least try. That's wild. if she has been to your place twice, and paid twice, she is wondering what the fukk you are doing.