This here:
https://thisvid.com/videos/girl-pee-92/
is the exact copy of the video to be seen here:
https://vk.com/video-184995714_456242457
Maybe someone would be able to save it. I provide the second link since the account on thisvid is accessible only for friends.
Nonetheless, this one also look promising but I wasn't able to find the source video anywhere else. So, it'd more than appreciated if anyone could save it and upload here:
https://thisvid.com/videos/girl-pee-73/
And, last but not least, another CCTV footage. I'm not sure if I've seen it anywhere around here, so enjoy in case you've also missed it thus far:
https://vk.com/video-159024599_456245023