Hey hey! :3
Is it just after Alyx meets Alvy at the hospital and they leave the room together? If so, it's just because that's the end of the demo unfortunately :( I had to rush to submit it in time for the end of the jam and it was supposed to go back to the title screen but instead, it just bugs out and crashes >.< I haven't fixed it since it's the end of the demo anyhow and I'm currently working on my main project at the moment. I will be finishing CiQ properly once I've completed and released SR though :3
If the crash is somewhere else in the demo, please let me know roughly what happened before the crash and I'll try to get it fixed.
Hope you're well and staying safe :3