It was a Linkedin invitation. I kinda' hoped it was for real, for whatever reason, BUT when I cliked on it LinkedIN displayed an error. So she most likely pressed something she shouldn't have then corrected it.
Either way, it's not a good idea to jump to comclusions with women. Sometimes they intentionally do something and instantly regret it and say it was an error/mistake.
If an X wants to contact you, (s)he has all your contact information and will contact you properly, otherwise it's not worth your time ... not even to write about it on your blog. Oooops!