I'm currently having a similar problem. I get the alert to assess the collapsed sim and she walks in the doorway, but I cannot click on her or do anything. She goes on her own to an open bed, lays down on it, and stays there until my shift is over because there's no way for me to interact with her. It happens randomly (every day or two). I have tried resetting her with cheats which makes her get off the bed and then she starts showing symptoms (dizziness), then just gets back on the same bed. So it's not that I can't find the collapsed sim, it's that I can't interact with them in any way so therefore I obviously can't treat them. Any ideas?