OP if this didn't happen already, remind yourself to think of something to talk about.
Specifically, news regarding the world, menial shit, avoid political stuff, if possible focus on things nearby your town.
Never NEVER FUCKING NEVER I SAID NO talk about anything regarding your own health or hygiene or anything of the like DON'T YOU FUCKING DARE TO MAKE AN "IRONIC" COMMENT ABOUT HOW PATHETIC YOU ARE, IT WILL BE AWKWARD AND BOTH OF YOU WILL WANT TO KILL YOURSELVES BECAUSE OF IT.
If she is getting awkward and looking more autistic than you… GOOD, THAT IS PERFECT (if you are not the one making things awkward, that is).
As long as she is acting awkward because she is worse off then you win, it's a victory, you hold the knife by the handle but again DON'T YOU FUCKING DARE TO TRY TO MAKE HER FEEL SECURE BY COMPARING HER TO YOU, SHE MUST NEVER KNOW ABOUT YOUR REAL SELF, NEVER, HOLD IT UP IN A CAGE AND NEVER LET IT OUT, you can however make her feel secure by saying things like "Oh no, I found it cute how you fidget around" and whatnot.
And again: find something to talk about, get a culture, don't "improvise", you can't improvise if you don't have a plan, especially a sack of shit like you, fucking hell you mix with us, you think you can "improvise"? Your powerlevel will be all over the place and goodbye, no more 3D waifu for you.
No, she won't care about brain surgery on mices, yes she might be more interested in talking about a coming film, an actor or just gossips in general, in this scenario the things we consider "cancer" are actually pretty good to make small talk.
Don't jack off before you go on a date, no it's not because you might "score" but having that itch during a date might make you more determined.
One last thing then I'll shut my autism up: don't be afraid to touch her.
More important however: make sure this isn't a cruel joke