Sorry if this is something you've tried, I see no indication of it being the case here though. Basically I'm thinking sit her down, say "I'd like to talk about something and I need you to listen to me say what I need to say before you talk, ok?" Get that confirmation of "yes" before you go into it, if she tries to get the topic out of you or is argumentative at first then you can persist and even decide not to talk about it until she's ready to be receptive. Because I struggle socially I'd have a list prepared of what I want to say and practice it first, you may or may not choose to do so. The key thing for you I think would be reminding her that you are aware of the risks and that you are not interested in going overboard, you just want to know what those things are like and you might not even like them. You may have said these things during an argument, but people are generally not receptive when they're emotionally high, so talking to her calmly might do better.

Regardless of how the conversation goes, it's still probably better for you to wait until you're out on your own to try these things, otherwise you risk her giving you a hard time.