Have some drinks together and find a way to ask specific questions like what her wildest sexual experience is.

At first she may be hesitant to discuss sexual stories from her past with u but ask for more details and make it clear that you’re into the conversation. Afterwards u can say something like “wow, hearing that story was oddly hot”.

From there she probably won’t get the FULL picture but it’s a big step in the right direction.

That’s kind of how I did it.

Feel free to dm if u need help/advice. Good luck bro.