That's when you tell her "I have to take a piss"...and you never come back...

You can still close her... if you are brave enough lol.

if you ever end up in the same position just tease her, say stuff like what are scared? what are you worried about? comfort her you arent going to disappear straight after. do it all with humor though! be cheeky until you force her to break and go along with it..

but some girls just wont do it on the first intimate moment... they will do everything else though... ive even had girls fake that they have their period just because they dont want to feel slutty for doing it so quick...

thats alright, just use that and say ok well next time... get that agreement for next time and bone her a couple days later.. no big deal.

but yes sounds like steer clear rship wise lol...

If she did die while having sex with you, it would have been the worst day of your life or somewhere near it, so you should consider it could have gone much worse for you than just not closing her...
Did you figure out why did she call you after doing that?