A faded contrail type of craft moving quickly over a friend's house

We were hanging out on the back deck of my friend's house just watching the stars. There's little to no light pollution in that area as it's out in the country, so you can see the sky very well. Anyway, it was a clear night that night and we were just enjoying how beautiful the sky looked that night. I turned my gaze towards the sky just above the house and I saw something that sorta looked like a fast-moving contrail that was in 2 lines heading west and just disappearing before going out of sight. It's really hard to describe because it was much lighter than the usual contrail and it looked like something I saw in Colorado Springs a few years ago, but with a completely different shape. It made no sound and it was only there for like 3 seconds before it disappeared. My friends did not see it because they were talking to each other and weren't looking up. I asked them if they saw it too and they both said that they didn't. I'm not sure of the exact time, but it was between 11:30pm and midnight.
Interestingly enough, about 2 weeks before I went out there, my friend sent me a picture of something really strange and asked me what it was. I told her that I had no idea but that it looked like she caught a UFO and maybe a portal. She said that she was trying to take a picture of the moon that was between some tall trees in her back yard at 12:33am, but caught something much more interesting instead. She didn't even notice the UFO on the left until I pointed it out to her when I got there. Now she is blown away about what she captured.