Supernatural films scenes for episode 818 with SPOILER character returning

THIS BLOG POST CONTAINS CHARACTER SPOILERS FOR EPISODE 818 OF SUPERNATURAL! If you dont want to know any spoilers in advance of watching the episode, please DO NOT READ ON OR VIEW THE PHOTOS!
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Last Warning
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About a month ago I caught Supernatural out filming scenes for episode 818 in Vancouver near the Train Station.

For the set of scenes I saw over 2 nights, there was 4 actors in the scene. Of course, the always familiar Jared Padalecki as Sam Winchester & Jensen Ackles as Dean Winchester were clearly recognizable. But who were the other 2?? Well, I still dont know who 1 is, and the other I didnt know right away. When I got home from shooting the 1st night, I asked a friend if she recognized "the girl with the gun" as I described it to her. She instantly said without hesitation she thought it was Madison McLaughlin, known to SPN fans as "Krissy" from "Adventures In Babysitting", the other woman I still dont know.

The next day, the same 4 cast members were on set, and after shooting that evenings scene I knew my friends instinct about Krissy being back was right.

I sat on this spoiler for awhile, thinking I had it in my pocket.... the The CW went & posted a promo showing Madison McLaughlin plain as day in it, killing the spoiler.

So, here are the admittedly grainy photos (shooting from about football field away in the pitch dark & smoke machines going will do that) from those 2 nights of Jensen Ackles, Jared Padalecki, Madison McLaughlin & still unnamed 2nd actress (ANYONE who knows, please feel free to let me know & I will revise this).